What would you do if your partner and your bestfriend had an affair?

Oh what a slapped on my face. If my boyfriend would do that... I am sure i'm gonna cry hard enough for so many days... AFter that i will tell my boyfriend and my best friend that i am happy for them. I hope that what they did to me won't happen to them both coz i don't want them to suffer just like what i've gone through. At least it happened not in our marriage or else i might kick them both. huhuhuh

If mine did I would be really weirded out because they are on such opposite ends and totally not compatable at all. However, I don't think I could forgive them. At least not soon afterwards. That would be ahuge hurt to me and they would surely know that it would cause me pain. If they wanted to be together they could talk to me before hand rather than jumping in together first.