How would you react if you find out that your best friend is messing with you partner

I absolutely blame both of them... Angry to both of them... for all the fake behind me... and i absolutely dont want to meet them again

I would end it with my partner, and freak out on my friend, and then, I would never talk to either one of them!

Feel very sad, that this is happening to me, and avoid them both, from my life for ever and will never forgive both of them even if they beg for forgivness.

I would blame them both as it takes two to tango, but I would be more angry at my friend than my partner. As a girl, there is a "friends code" that you do not do anything with your friend's boyfriend or even ex-boyfriend without asking to make sure that it is okay first. I would finish my partner for cheating, but it wouldn't make any difference whether he was cheating with my friend or a stranger.

Both should be blamed for having that immoral relationship,in the first hand.Second comes you who could not judge the character of your friend and partner and allowing them to have a meeting.Last and final thing to do is just forget them both and leave them to enjoy their fate and look for another nice partner.Cheers!

lol omg.. i wish it will not happen... well, i will not going to blame anyone of them coz i cant hold the future... i will still going to treat them nicely, they will be the one to feel guilty and will be the one to feel not comfortable with me.. if i will look miserable then that will only means that i let them win and be happy... so since they treated me that way then i will reverse it... i want them to feel the pain.. and i will having fun..