: A character believes his/her significant other is cheating on them.
- Straight: Alice sees her boyfriend Bob and his friend Claire alone together and assumes he's cheating.
- Exaggerated: Bob strikes up an innocuous conversation with Claire, which arouses Alice's suspicions.
- Downplayed: Alice sees Bob staring at Claire's chest and assumes he's blatantly checking her out. Really he's just astonished by Claire's ugly shirt.
- Alice's previous boyfriend cheated on her, so she's more likely to assume other guys are cheating.
- Or Bob has a known history of cheating of his girlfriends, but is working hard to amend his ways.
- Bob and Claire make out in front of Alice - and she doesn't suspect a thing.
- Alice suspects Bob of everything but cheating, only to learn that he was having an affair with Claire.
- Subverted: It turns out Bob really was cheating on Alice.
- Double Subverted: With her clone.
- Parodied: Alice, of all people, turns out to be the other woman.
- Zig Zagged: However, it turns out Bob really WAS cheating on her, with Alice's Sister, who asked Claire to tell Alice nothing happened between Claire and Bob.
- Averted: Alice doesn't assume Bob is cheating.
- Enforced: "Alice and Bob are happy, right? We can't have that!"
- Lampshaded: "I hope Alice doesn't think there's anything between us!"
- Invoked: When Bob believes Alice is losing interest in him, he starts hanging around with Claire to make her jealous.
- Exploited: Charlie tries to confirm Alice's suspicions. So that she will leave Bob & start going out with him.
- Defied: Bob refuses to even do anything that could be construed as romantic with any other females, because he doesn't want to make Alice assume anything.
- Discussed: "It's all a mistake! I wasn't cheating!"
- Conversed: "Oh, wow, another plot where she thinks he's cheating on her."
- Deconstructed: Alice's constant suspicions start to derail the relationship and end up destroying it, as the constantly-faithful Bob decides he's had enough of it.
- Reconstructed: Claire is eventually able to prove Bob's innocence, leading Alice to try to win Bob back over and repair their relationship.
Honey, I can explain the Lipstick Mark
, the bra in my bed, and the photos! Just go back to Mistaken for Cheating