Faux-girl power pet peeve

There's that recurring trope in romantic comedies where the main female protagonist is jealous of her male love interest's new hot close lady colleague but at the end it's revealed that said hot lady is a lesbian, or even better, a lesbian in love with the protagonist.  I hate that.  It's like the only way to remove girl on girl competition is to replace it with lesbianism.

Like that episode of family guy where Meg proclaims that she is a lesbian just to feel some affection from another human being, and Lois calls her out on it.

Or to bond over hating the same guy they both have a crush on (see: hos over bros)