Comphet
Comphet stands for “compulsory heterosexuality.” It has it’s own definition on Wikipedia or whatever, and that’s generally correct, but not entirely.

Comphet is a term generally used in lesbian circles that refers to when a lesbian is led to think that she’s attracted to men. This can manifest in her also knowing she’s into women, and thinking she’s bi, or her not even recognizing she’s into women, and thinking she’s straight. This experience can be hard for them to go through.

This happens to gay men to an extent as well, but not nearly as often or strongly.
Person 1: Why did you date Boy? You’re a lesbian, right?
Lesbian: Oh, that was just comphet.