Straight Titles with LGBTQ Secondary Couples

Secondary gay couple with an open ending

A male love interest is subtly introduced for a SML in the last few episodes. It's clear what's happening (and a SFL is supportive about it), but they never get around to confessing their feelings.

Lesbian secondary couple with a happy ending.

Secondary couple is a self-identified lesbian who falls in love with a man.  So it's a heterosexual secondary relationship involving a queer person.

FL is a lesbian who eventually leaves her boyfriend for her girlfriend, but the lesbian relationship has little screentime

Gay secondary couple

SML is in an abusive gay relationship

Gay secondary couple