Electronic Book Readers

So me and my off and on "best" friend ( i use the term lightly) went out the other week with a friend of hers....Now the low down on me and my friend is we are very different from each other in fact i cant take too much of her personality at times so often we take breaks from each other...any ways we go out clubbin with her friend and me and HER friend click automatically as if we've know each other for years so the night ended with me and her friend exchanging numbers. ..and we went out clubbing and out to eat and stuff since then without my friend..and we are probably going to do so again this week...now i feel bad because my friend introduced us, BUT she is sooo extra sometimes you just dont want to be around her....now am i wrong for like not inviting her..im not trying to be a friend stealer but its rare that i meet people that i connect with like that.i feel weird like im cheating or something. am i bad friend?