To preface this: I haven't seriously thought about this that much, and I know I probably would be the asshole, I just want some outside input. I'm also using an alt account as to not out anyone in this post.

I (M, 16, bi) have kept consistent contact with my friend (F, 17, lesbian, we'll call her Anna) since middle school, even though we went to different high schools. We have similar interests, senses of humour, etc. I have to admit I kind of did "like" (thats a word middle schoolers use right) her a little back in middle school, and she has said that her mom tried to encourage her to ask me out in 8th Grade, but that's all just stupid middle school stuff. There were a few other things, like when I and a couple of other friends had to help her get out of harassment from what I can only call the middle-school version of an r/niceguys guy, and the joke that "shipped" me with her, but once again, stupid middle school stuff.

Fast forward to now. I talk to her pretty much daily through text. She has an actual girlfriend (We'll call her Sarah, she doesn't really factor into the story other than her existence though) now as opposed to an "I have a girlfriend go away" kind of thing which she had for a while. Sarah seems nice and tbh they're cute together, but I digress. Anna is out to a lot of people she knows, but not to her or my parents yet. I remain single (I mean I'm on Reddit, what did you expect) and not out (coming out as bi isnt that difficult comparatively but still) to my family mostly because of my brother's seemingly constant homophobic comments even though he has full knowledge that Anna, the closest person I have to a "best friend", is gay.

Now my parents have been asking the normal "have you found yourself a girlfriend" questions, but have also been kinda weird about her, things like assuming I have a thing with her or I'm attracted to her, or even trying to set us up. It's been getting really annoying, especially the setup efforts. I had the idea of just telling my parents that she's gay and has a girlfriend to get them to stop, but I feel like that would be unfair to her, and even if I told my parents not to tell anyone, it has been proven I can't trust that when my parents promise that.

TL;DR WIBTA if I told my parents my lesbian friend was lesbian because they keep trying to set me up with her?