when i fist met my now ex-gf, i also had met some of her friends and winded up starting a fast friendship with one of her best friends. We would talk a lot online, not hang out or anything, and just became good friends. after the relationship ended with the ex (she broke up with me), i remained good friends with her best friend. She helped me through a lot with the ex (i still liked the ex a lot) when she didn't even have to. After the break up with the ex for several months afterward me and the ex's friend would drunk dial each other ever so often (her more than me), i admit there were slightly flirty overtones, nothing major or anything. i would never think of doing anytihng; ' sexual' with her but to be honest i enjoyed the attention but thought nothing else of it and we would talk frequently.
my ex never said anything about it to me but it just hit me today that maybe it did bother her, i'm just wondering if it is wrong to do these type of things, be good friends with an ex's friend?