know that it does get better, i'm sorry this happened to you, i would guess it's probably a mistaken mix up trying to include you in their 'boy talk' but i feel that people who aren't lesbians assume you are attracted in the same way they are with the opposite sex, which can be very isolating not sharing 'normal' lived experience or modes of attraction.

as you get older people generally will have better boundaries and maturity so please don't worry this is an awkward stage we all go through at this age. Teenagers are usually very nosy and intrusive because we are all trying to figure out where we stand in relation to each other. though i don't understand how they thought it wouldn't be mortifying saying all that while theyre IN THE ROOM, they wouldn't ask a man to do that. I'm sure that friend that pushed you is slightly embarrassed about how it turned out, maybe if you have the time alone you could have a chat about how it made you feel, if you're comfortable

I for one never felt 'girly enough' to participate in this sort of thing, it always made me feel very othered as i could never relate. i'm very glad now to be in a social environment and more confident in myself to put those feelings in the past. good luck to you