Affair Partner: meaning
Also: ap meaning affair, AP, other woman or other man

AP is shorthand used in infidelity support communities. Betrayed spouses use it to talk about the third person without naming them, and counsellors use it to keep the conversation neutral.
What AP covers
The letters stand for affair partner. Related abbreviations appear in the same threads:
| Abbreviation | Meaning |
|---|---|
| AP | Affair partner |
| BS | Betrayed spouse |
| WS | Wayward spouse |
| D-Day | Discovery day |
| NC | No contact |
| RA | Recovering from an affair |
In that world, the phrase always implies deception and pain. It is not a lifestyle word.
The consensual cousin

A hotwife's bull plays a similar role in practical terms: he is the third person. Everything else differs.
- Knowledge. The husband knows about the bull and often helped choose him.
- Terms. The bull follows rules; an AP follows nothing but his own interest.
- Aftermath. The husband hears details if he wants. In an affair, the spouse learns by accident.
- Exit. A bull can be ended with a message. An AP often stays close in memory.
The side-by-side is in hotwife vs cheating.
Why this matters for fans of the genre
Cheating-wife role-play uses affair vocabulary because the vocabulary is charged. A husband who listens to such a script is adopting the perspective of the betrayed spouse, then letting the story turn into pleasure. My cheating-wife fantasy guide explains how people enjoy it without harming anyone, and cuckold fantasy vs reality draws the line.
If the word shows up in your own life

If you came here because you read AP in a message about your own marriage, the situation is not fantasy. The usual advice from therapists is to stabilise first, gather facts second, and decide third. Do not try to settle things while furious. A counsellor who works with couples can hold the structure that you and your spouse cannot hold alone.
A final distinction
Secrecy is the hinge. If it is hidden, it is an affair and the third person is an AP. If it is agreed, it is a form of open relationship, and the third person is a partner, a date or a bull. For the full map, read ethical non-monogamy types.
Healing language
Recovery communities use the abbreviation because it keeps the focus on behaviour and not on a face. If you are reading about affairs because you suspect one, consider recording facts without conclusions, getting tested if there has been any risk, and speaking to a counsellor who works with couples. If you are reading out of curiosity about role-play, the key lesson is the same: honesty is what turns a risky story into a safe game.
Examples in a sentence
- On the forum she wrote that she had found out about the AP three weeks ago.
- In the story the bull is the husband's friend, not an AP, because everyone knows.
- The therapist asked her to describe the AP only by role, not by name.
Frequently asked questions
What does AP mean in an affair?
AP means affair partner: the third person in a secret affair. It is a standard abbreviation on infidelity support forums.
Is a bull an affair partner?
Not in a consensual arrangement. The husband knows and agrees, so there is no betrayal. The roles look alike but their meaning is opposite.
Why do role-play scripts use affair language?
The vocabulary of secrecy and risk is exciting, and in a script nobody is truly hurt. Both partners understand it is a performance.
Read the full guide
- Hotwife vs Cheating: Where Consent and Rules Draw the Line
A hotwife dates or has sex with other men with her husband's knowledge and consent, within rules both agreed. Cheating is secret and breaks a promise. - The Cheating Wife Fantasy: Why It Works as Consensual Role-Play
The cheating wife fantasy is a role-play in which a wife pretends to have kept a secret that she then confesses. Between consenting spouses it is thea - Cuckold Fantasy vs Reality: What Changes When It's Real
In cuckold fantasy vs reality, the fantasy is edited, instant and free of consequences, while reality brings logistics, real emotions, health decision - Types of Ethical Non-Monogamy: A Map, and Where Hotwifing Sits
Ethical non-monogamy is an umbrella for relationships where partners openly agree to have other sexual or romantic connections. The main types are swi
Related terms
By Juliet Monroe · updated 2026-10-19