should I hate my bestfriend for dating my ex?

I think the main word here is "Ex" I know it must be a very hard thing to cope with but if you treasure your friendship with yourt friend you will try to cope, show them what a big person you are and also show your ex you are over him, it is a sticky situation as our emotions are something we can not control, i say get your self a new boyfriend and show the world that you don't care....

If it was me, i would find it hard and unfair of the best friend. However, id look at there relationship and see if they really liked each other. if it turned out they did, id understand, and forgive them both. However, are you actually upset by your riends actions, or just scared as to how others will react? you should let your own feelings guide you, other peoples opinions dont really matter when it comes to loosing your best friend or not. If anything, people will see you as a good friend, for forgiving your best to let her be happy. i think in your case, you should forgive her, but maybe set down some ground rules to stop things rom being awkward for you both. Things like, no going into detail about the relationship, or agreeing that youl be polite to the ex, even if you dont always want to be. friends are worth more than boys anyday, keep them close to your heart :)