Can't believe this has to be spelled out for some people, but here we go: If you have a crush on someone, and hope to pursue something with them in the future, maybe don't f*ck their sibling.

We don’t know the sequence of events. Maybe he only met his crush by screwing her sister first?

"fawning over her for years" didn't give me the impression that this was a recent development on OP's side.

But even if the sister was first, it's unlikely to ever happen, who wants to their sibling's second hand d*ck? Or the awkwardness of a family function with someone who has seen both you and your sibling naked. Especially with a guy who doesn't even get your name right. Nah, hard pass.

It doesn’t seem like a small mistake.

Maybe try to date the mom and hope the third time’s a charm and you don’t fuck it up.

😂

And why would you sleep with her sister if you had a major crush on her? If you liked her that much you wouldn’t of gotten in to bed with her sister just in case you ever did have the chance to be with her

The fact you used to have sex with her sister is not a good starting place for a relationship. To then call her by her name may well be the end before the start.

No, there's no circumstances under which that would be a small mistake. But your history does make it even worse.

I mean that sucks for you but it sounds like you expect her to get over it faster or something. That’s understandable why she feels that way. Maybe don’t hit so close to home next time to be safe

Is your name Ross by any chance?

Don’t go in the same house twice for a relationship, whether casual or serious. Same with avoiding close friends. It will always be a sore point with many. And for the ones who do get over it, it takes time.

There are so many levels of creep here...

branch out a bit please