This?

That's the one. Thanks for the help!

Maybe this one?

Nope, not it. If it helps I'm pretty sure it started with blonde girl casually going "hey let's go out" not with a break-up.

Also at some point they're called dykes.

I'm looking for a oneshot(?) about two girls in high school(?) where one of the girls who I think was blonde suddenly confesses to the other girl who reluctantly accepts, the girl who was confessed to doesn't notice any changes in their until the blonde girl suddenly kisses her goodbye after a date. And I think at some point the blonde girl gets confessed to by a guy after breaking up with the other girl because she thinks that she's uncomfortable being in a relationship with her. Then the other girl comes back to kiss her and tell the guy that the blonde girl's already taken, then she and the blonde girl get back together.

That's about as far as I can remember, I spent a few days looking for this without knowing this forum existed.