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Player guide
Give two Sims a relationship that means something, and unlock things they can only do together.
The game gives you “Friend” and “Romantic Interest”. This mod adds 24 relationship bits of your own choosing: Childhood Sweethearts, Love-Hate Relationship, Study Buddies, Long-Distance Love, Night Owl Companions and many more. Each one shows in the relationship panel with its own picture and description.
Many bits do more than look nice. They open interactions, phone outings and moodlets that only make sense for that kind of relationship. A long-distance couple can have a video date or travel to visit. Star-crossed lovers can meet in secret. Night owls can go out together after 11 PM.
Version 1.5.1 is free.
Getting started
What you need
- The Sims 4 base game. No packs needed.
- XML Injector. Required. Without it no menu shows up.
- Lumpinou’s Mood Pack. Required. Keep it up to date.
- Maplebell Pie Menu. Required. You only need one copy, shared by every mod that uses it. If you already have it, keep it.
More Kisses is not needed. Older posts said you needed it for the kiss interactions. That is no longer true.
Installing
- Close the game.
- Delete every older copy of the Relationship Bits files from your Mods folder, including any in subfolders.
- Unzip the download (
Custom_Relationship_Bits_v1.5.1.zip) into your Mods folder. There are three packages:maplebell_customrelationshipbits.package(main, keep it)maplebell_customrelbits2.package(second part, keep it)maplebell_customrelationshipbitmilestones.package(milestones)
- Make sure you have exactly one copy of the Maplebell Pie Menu.
Updating: replace the old files. Delete the three Relationship Bits packages and put the new ones in their place. The file names are the same. Never keep two versions. The bits your Sims already have stay in your save.
Removing: delete the files. Your Sims and households are fine. The mod’s bits and moodlets go away with it.
How to use it in game
Setting a bit
- Control the Sim you want to set the bit from.
- Click the other Sim, then Actions, then Enhanced Rel Bit.
- Pick a bit from the list. Each one has a description.
The Enhanced Rel Bit menu and the list of bits. From an earlier version.
You can also set a bit without the other Sim being there: open the relationship panel, click the other Sim’s entry, and use the same menu.
- Teens and older can set bits. A child can set only Childhood Sweethearts, with another child. A child sees only that row.
- Romantic bits can only be set when both Sims are teens or older.
- The 14 friendly ties cannot be set toward a baby, infant or toddler.
- Set only works on humans.
- Most bits go both ways. Secret Admirer and Unrequited Love are one-sided: only one Sim feels it.
Removing a bit
Use Remove Relationship Bit in the same menu. It shows each bit with its picture. Only bits the two Sims actually have can be picked.
- Remove still works on pets, so a tie set on a pet in an older save can be removed.
- A child can remove Childhood Sweethearts with any Sim it holds that tie with: a child, teen, adult, elder or pet.
Some bits also go away on their own when a couple breaks up (see “Break-ups” below).
The 24 bits
| Bit | Comes with |
|---|---|
| Adventure Partners | Engagement moodlet, milestone |
| Childhood Sweethearts | Nostalgic Reminiscing; new-relationship and engagement moodlets; milestone |
| Culinary Companions | Milestone |
| Flirty Friends | New-relationship and woohoo moodlets; removed at a break-up; milestone |
| Forever Grateful | (no extra interaction listed) |
| Gaming Buddies | Milestone |
| Healing Touch | Plan Relaxing Activities Together, Offer Comfort, Provide Emotional Support |
| High School Sweethearts | Engagement moodlet; milestone |
| Jealous Rivalry | Milestone |
| Long-Distance Love | Virtual Date, Travel to Visit Long Distance Partner; moodlets; removed at a break-up; milestone |
| Love-Hate Relationship | I Hate You (Kiss); new-relationship and woohoo moodlets; milestone |
| Music Collaborators | Milestone |
| Night Owl Companions | Night Time Activities (phone) |
| Partners in Crime | (no extra interaction listed); no milestone (removed in version 1.5.1) |
| Puppy Love | Promise Forever Love; moodlets; removed at a break-up; milestone |
| Romantic Wanderers | Create Travel Bucket List, Plan a Romantic Getaway; engagement moodlet; removed at a break-up; milestone |
| Secret Admirer (one-sided) | Milestone |
| Star-Crossed Lovers | Forbidden Kiss, Secret Meeting With Lover; moodlets; removed at a break-up; milestone |
| Study Buddies | Quiz Each Other, Plan Study Session; milestone |
| Summer Romance | Share Summer Memories; new-relationship and engagement moodlets; milestone |
| Tech-Savvy Partners | Send Tech News (phone) |
| Unbreakable Connection | Celebrate Anniversary of Enduring Connection, Promise Everlasting Friendship |
| Unrequited Love (one-sided) | Try to Confess Feelings, Cry about Unrequited Love |
| Wisdom Seekers | Ask Questions about the Universe, Study Together at the Library (phone) |
Bits in the relationship panel, each with its own picture and description.
The newer bits (from Forever Grateful to Night Owl Companions) have no milestone. Partners in Crime has none either: the Became Partners in Crime milestone from the 31 October update was removed in version 1.5.1 because it was broken. The bit and its interactions stay.
Bit milestones on the Social milestones page.
What the bits unlock
Bit-only interactions only show for Sims who have that bit with each other. A normal friendship or romance bar is not enough. Plan a Romantic Getaway and Promise Forever Love are in Romance > Flirtation. The phone features are all in the phone’s MB Menu folder.
Some of the bit-only interactions.
Long-Distance Love
- Virtual Date (phone): a video call with your long-distance partner, about one to two hours. Both Sims get a happy moodlet afterwards. Relatives are not listed.
- Travel to Visit Long Distance Partner (phone): costs §1,000 and your Sim is gone for about two Sim days. They come back with one of several moodlets. If you cancel, the game asks whether you want to leave early. The option is greyed out if you cannot afford it.
Star-Crossed Lovers
- Forbidden Kiss: uses the game’s own kiss. The kissed Sim gets a random moodlet.
- Secret Meeting With Lover (phone): a three-hour outing that always ends with a moodlet.
Love-Hate Relationship
- I Hate You (Kiss): uses the game’s kiss and gives a random moodlet. Not offered between relatives.
Summer Romance, Study Buddies, Childhood Sweethearts, Romantic Wanderers
- Friendly chats: Share Summer Memories, Quiz Each Other, Plan Study Session, Nostalgic Reminiscing, Create Travel Bucket List.
- Share Summer Memories and Create Travel Bucket List are for teens and older. Nostalgic Reminiscing is open to children too, because Childhood Sweethearts start young.
Healing Touch
- Plan Relaxing Activities Together and Offer Comfort (uses the game’s friendly hug).
- Provide Emotional Support: use it when the other Sim is sad. A card asks “What’s Wrong?” and the sad Sim picks one of seven reasons. The other Sim asks for more, then gives matching advice and reassurance.
Provide Emotional Support: the What’s Wrong? card and the advice that follows.
Wisdom Seekers
- Ask Questions about the Universe: one of 16 random questions and answers.
- Study Together at the Library (phone): pick Wisdom Seekers who are on the lot. Everyone goes for a three-hour outing and comes back with Wisdom Shared.
Unbreakable Connection
- Promise Everlasting Friendship: only before the promise. Needs best friends and friendship 80 or more. It sets the Unbreakable Connection bit and gives both a moodlet.
- Celebrate Anniversary of Enduring Connection.
Tech-Savvy Partners
- Send Tech News (phone): a short phone message. Your Tech-Savvy partner texts back.
Night Owl Companions
- Night Time Activities (phone): only from 11 PM to 5 AM. Pick one Night Owl companion who is on the lot, then pick an outing. Both Sims leave together and come back with a moodlet. Most outings last two to four hours. Moonlight Market Exploration keeps its own outing and gives no moodlet.
- 5 AM closes the start window. An outing that started earlier can run past it.
- Teens and older can open it. Children can still be picked as companions.
Night Time Activities on the phone, with its list of outings.
Unrequited Love
- Try to Confess Feelings: the Sim who hears it picks one of ten answers. Each one changes friendship and romance in its own way, and both Sims get a moodlet. One answer, Mutual Feelings, removes the Unrequited Love bit. The animation does not decide the result. Your choice does.
- Cry about Unrequited Love: the sad Sim confides in a good friend (friendship 70 or more).
Try to Confess Feelings and some of the answers.
Romance > Flirtation
- Plan a Romantic Getaway and Promise Forever Love.
Forbid Relationship With
- A parent picks someone their teen or adult child is seeing and forbids it. The child answers on a card. Some answers (“No, I won’t”, “Can’t stop love”) make them Star-Crossed Lovers with that Sim. Others (“I’m sorry”, “I understand”) remove it.
- Relatives are not listed, and children cannot open it.
The child’s answers to Forbid Relationship With.
Romance and ages
- Romantic interactions follow the game’s own rule: teens with teens, or young adults and older with each other.
- Children cannot open Virtual Date, Travel to Visit, Secret Meeting or Night Time Activities.
- Forbidden Kiss, I Hate You (Kiss), Plan a Romantic Getaway, Promise Forever Love and Provide Emotional Support never start on their own. You choose them.
Break-ups
When a couple breaks up, these bits are removed: Long-Distance Love, Star-Crossed Lovers, Flirty Friends, Romantic Wanderers, Puppy Love. The same happens with break-ups from story events.
A long-distance break-up gives both Sims Distant Hearts.
Some of the break-up moodlets, including Distant Hearts.
Contextual moodlets
Depending on their bit, Sims can get their own moodlets after:
- a completely satisfied woohoo,
- starting a relationship,
- getting engaged,
- a break-up.
Moodlets for starting a relationship.
What’s new in version 1.5.1 (12 November 2026)
Changes since the 31 October update.
Setting and removing bits
- A child can now set Childhood Sweethearts with another child. A child sees only that row.
- A child can remove Childhood Sweethearts with any Sim it holds that tie with: a child, teen, adult, elder or pet.
- The 14 friendly ties can no longer be set toward a baby, infant or toddler.
- Set only works on humans. Remove still works on pets, so a tie set on a pet in an older save can be removed.
Activities
- Virtual Date, Travel to Visit Long Distance Partner and Secret Meeting With Lover are for teens and older. Virtual Date no longer lists relatives.
- Share Summer Memories and Create Travel Bucket List are for teens and older.
- Children can no longer start Night Time Activities. They can still be picked as companions.
- Travel to Visit Long Distance Partner and Secret Meeting With Lover now add romance between your Sim and the partner.
- Travel to Visit, Secret Meeting, Night Time Activities and Study Together grey out for a grounded teen, with the game’s “Grounded: Can’t Leave Home” tooltip. Night Time Activities and Study Together show their plain name there, without “Stealthily”.
Interactions
- Forbid Relationship With no longer lists relatives, and children can no longer open it.
- Forbidden Kiss and I Hate You (Kiss) give the kissed Sim one of their four moodlets at random.
- Forbidden Kiss, I Hate You (Kiss), Plan a Romantic Getaway, Promise Forever Love and Provide Emotional Support During Difficult Moment are no longer started by Sims on their own. You choose when to use them.
- I Hate You (Kiss) can no longer be used between relatives.
- Try to Confess Feelings keeps only its two neutral opening lines.
Milestones
- The Became Partners in Crime milestone from the 31 October update is removed. It was broken. A save that earned it loads fine and simply forgets it. The Partners in Crime relationship bit and its interactions stay.
Good to know
- Set is for humans only. Remove also works on pets, for ties set on a pet in an older save.
- A child can set Childhood Sweethearts with another child, and remove it with any Sim it holds that tie with.
Known limits
- Travel to Visit can be used with a relative as the long-distance partner, if they have the bit.
- Ask Questions about the Universe: one question comes up twice as often as the others.
- Other game languages show English text. All 18 language slots are filled, so nothing shows blank.
If something looks wrong
I cannot find Enhanced Rel Bit. Check that XML Injector, the Mood Pack and one copy of the Pie Menu are installed and up to date. Click the other Sim while you control the first one, then go through Actions.
An interaction for a bit is missing. Check that the bit is set between those two Sims, not just a high friendship or romance bar. Check the age rule (romance is teen with teen, or adult with adult). For phone outings, check that the other Sim is on the lot when it says so.
Night Time Activities is missing or the list is empty. It only opens between 11 PM and 5 AM. The companion must have Night Owl Companions with your Sim and be on the lot.
Travel to Visit is greyed out. It costs §1,000. Check your household funds.
Study Together lists nobody. The other Sim needs the Wisdom Seekers bit with your Sim and must be on the lot.
A milestone does not show. Milestones need the milestone package. The newer bits have no milestone, and the Became Partners in Crime milestone was removed in version 1.5.1.
I got no moodlet after getting engaged. Those moodlets need one of the bits that has them.
A bit is gone after a break-up. That is on purpose for Long-Distance Love, Star-Crossed Lovers, Flirty Friends, Romantic Wanderers and Puppy Love.
Do I still need More Kisses? No.
Can I add it to a save I already have? Yes. Bits only appear when you set them.
Will my bits survive the update? Yes. Bits are saved with your Sims’ relationships. Bits set in older versions stay in your save.
If something goes wrong, tell me what happened, what you expected, and which Sims were involved.