Adult only. Private by design.
Talk to your partner about a lifestyle party

The party is the easy part. The conversation on the couch is the one that decides whether you both still want the door. Have it before anyone sends a link.
The short answer
Talk to your partner before you host, before you accept, and before you tell a friend you are in. Say what you want, what is off the table, and the word either of you can use to end the night. A lifestyle party is easier when both of you already agreed to the shape of it.
Curiosity is not a shared yes. One of you can be ready to watch. The other can be ready to play. The night you attend is the stricter one, unless you are both excited about a split you can say out loud. Most couples are not. A name appears only when both people said yes.
Adult only. Private by design. There is no public guest pool. The app will not have this conversation for you. A private no stays private. A one-sided yes stays hidden.
What to actually say
Start with the night, not a fantasy you have never said in daylight. Name the format: a key party, a play party, or a speed date. Name the ceiling: soft or full, and that the lower yes wins. Soft usually stops short of intercourse with someone else. Full includes it. There is no switch. Name who is in the room: couples you both already trust, or singles only if the host invited them and you both said yes to that.
Ask the plain questions while you can still laugh. Do we stay where we can see each other, or is a separate room on the table? Do we leave together the moment one of us wants the car? Do we talk about it tomorrow, or do we need a check-in in the kitchen first?
If you cannot say it on the couch, you cannot say it in a stranger's hallway. Practice the sentence. I want this. I do not want that. I will tell you if it changes. That last one is the whole point.
Pick the word that stops the night
Agree on a word that means we are done, no debate, no audience. It can be ordinary. It should not be a word you use when you are flirting. Either of you can say it. The other person treats it as the end of the scene, the room, or the whole night, whichever you promised.
A maybe in the moment is not a yes you banked at home. Desire moves. So does fear. The partner who goes quiet gets the same respect as the partner who says the word. You do not negotiate a freeze in front of guests.
Tell the host the practical version, not your whole marriage. We leave together. We do not split up. We are soft only. A host can plan around a sentence. A host cannot plan around a look you hope they will notice. Message host is private to the host and any co-hosts.
When one of you wants it more
The partner who wants it more does not get to book the night and call it a surprise. A surprise lifestyle party is how you become the couple who had a fight in the driveway. Invite the conversation. Then invite the guests.
The quieter one does not owe a performance to prove they are fun. Sitting out is a full answer. Watching because you want to watch is different from watching because you were outvoted. Say which one it is.
If you are not aligned, you skip this date. There will be another. A private list does not expire because you needed a second talk. A plus-one does not get a link because one of you got impatient. If the host left partner comparison on, you can see each other's answers while they are still open. Nobody else sees them. That look does not replace this talk.
Pick the night after the talk
A key party is one person at a time. Your own partner is never someone you answer about. The host starts the reveal. Phones wait about ten seconds. The room sees one person, and only if both people said yes. Later rounds are still one person at a time. If one of you hates the idea of a reveal, do not run one and hope the music covers it.
A play party does not open names at check-in. The host closes the answers, checks guests in, and then opens the matches. Each checked-in guest sees one person at a time, and only where both people said yes. There is no single pairing for the whole room. An open room can include singles the host invited. Straight and bi-friendly rooms do not. If singles are a no, say couples only before the link.
A speed date is rounds, then yes or no. You see both names and one couple photo. A new party starts at five minutes a round, and the host can change the length. A match needs both couples to say yes. You stay dressed. It is the format for people who want to talk before they want a room.
Friends outside the two of you are a later choice. You can tell one person, or you can keep the night between you. If you would rather run the list yourselves, start hosting. Hold the street until you release it. The hosting help is the practical side of the same night.
FAQ
When should we talk about a lifestyle party?
Before the invite, before you accept, and again if either of you changes your mind. The car ride is too late to invent the rules.
What if only one of us is curious?
Then you are not going, unless the curious one can enjoy a night the other person actually wants. A surprise is not consent. Sitting out is allowed.
Do we need a word to stop?
Yes. Pick one either of you can say. It ends the scene or the night, with no debate in front of guests. A quiet freeze counts too.
Should we tell the host our whole agreement?
Tell the host the practical line: couples only, soft only, we leave together. Keep the private reasons private. The host needs the rule, not the diary.
Does the app handle the talk?
No. A name appears only when both people said yes. A private no stays private. The app does not replace the conversation on the couch.
When the list is ready, you can host a key party, host a play party, or host a couples speed date.