the ex and my best friend

If he is your Ex , then you would have departed on your differences , then i find no problems if that person chooses a person of his wish in your best friend..

If you're no longer together, why would it be betrayal? If your best friend was with your ex while you and your ex were together, it'd be a different story, but I'd say, yes, it'd be okay. I can only imagine how awkward it'd be and I can see how some would say that your friend was being insensitive, but it's my opinion that you can't pick who you love. If it bothers you, ask your best friend to not share the details with you and to schedule 'you' time without your ex around.

If they hooked up right after you two broke up then I might question it but if you were all friends before you split up and all hung out together then they got to know each other as friends. Did you and your ex have a bitter split or did you split on good terms? If you didn't want to be with your ex and well they and your friend hit it off maybe your friend and your ex had more of the same likes and dislikes and hobbies and things than you and your ex? If it bothers you maybe you should talk to your friend and tell him/her how you feel about it. But no there isn't anything wrong with a friend and an ex hooking up unless your friend is the reason the other person is your ex.

I dont class it as a betrayal, i just think it's wrong i wouldn't want to be with any of my friends exs, and honstly i wouldn't want them to be together either. Your friends should be on your side i dont like any of my besties exs because they were a**holes, and i was probably one of the people encouraging the split. I love my besties new man, he is cool and quiet and lets her get away with having abit of fun, friends are more important to me.

Since, accordingly to you that he is already your ex then you can't say that your best friend had betrayed to you.. If you don't love him anymore then you don't care whether they have a relationship but if you still your ex then it might be a jealous that you feel for them.. However, if other people see them then they might be thinking that they betrayed you since other people especially who are your friends and someone who are close to you might think that your friend had betrayed you.. Of course, it is not nice to see them to be together having a relationship especially both of them are close to you.. It seems that it smell something fishy that they might have already something before you broke up.. I don't know, maybe try to talk with your friend and tell her how you feel about them.. Tell her everything that you feel..This will also help you to stop thinking anything and stop being confused about the issue and your feelings..

That is not a good sign if you ask me. If I got divorced and my best friend married my ex-wife I might have some serious questions in my mind about the validity our relationships. You catch my drift?