OOC BC I FORGOT TO TACK IT ON TO MY OTHER COMMENTS
Rose and possibly by now the other Vampire Academy folks are friends with Caroline, Elena, Damon, Kol, etc, Y/Y? I know Rose has at least talked to them and I believe she introduced them to at least Lissa and Jill at the party that happened not long after Jill arrived.
Also, IDK if Ginny and Bonnie are totally friends yet, but she did help get the black candle of evilness and all. ;)