I think if your friend realizes she hurt you and can apologize that she disrpected you she is worth keeping, if she thinks she did nothing wrong blow her to the curb.

When I was divorced, women did not like me.  I had women pushing me on the dance floor (not all at once), cause their man may have looked my way, I had one guy friend tell me that this other girl asked him if I was a b*tch. He set her straight. Everyone thought I would try to take their man. I was sooo not like that. I can't say the same for the men of many of the girls, most were flirty.  But I always stick to my rule of thumb, never mess with another womens man. So I stuck to the few that took the time to get to know me.