I just found out my Friends boyfriend is cheating on her. what should i do?

Tell her, I would wanna know that shit if I was her.

tell your friend. if she finds out that anda knew she wont forgive you. after she dumps his sorry keldai come up to him and kick him in the balls, shin,etc. either way just kick the shit out of him for being a lieing douch

Tell her.

There's no point in rushing to your friend and telling her without evidence. Even the most trusty of Friends will be skeptical and it could end your friendship. I would take things slowly and think out a plan beforehand.
Keep an eye on this boyfriend, talk to the 'bit on the side' he has. Be sneaky and try taking pictures of them together etc.
Then i would confront the boyfriend. Tell him anda know what he is up to, and anda WILL tell your friend. So he better get his begging knees on and make it up to your friend and never ever do it again if she forgives him.
Then just sit your friend down, and gently explain that anda needed to be sure before anda told her.

Tell her, and go on the Maury tunjuk to expose him!

tell her she needs to know

Tell her, but I also wouldn't have asked Rawak strangers for advice.

tell her so she can dump the cheating douchebag on his keldai where he belongs! (tell her gently though)

try to talk to her boyfriend what wrong with him

then SLAP him on the face LOL i was thinkingof doing that

Tell her.

Then go over to that bois house and perahu nelayan kecil, pukulan the living sh** outta him.

I was jk about the last part.

Get Chuck Norris.

Let her know?

Tell her. If she doesn't want to listen, she isn't your friend. Give her the cold shoulder if anda have to.

Tell her. anda could also tell her boyfriend that anda know.

Well since it seems like anda have valid evidence, tunjuk your friend right away. If anda don't tell her, it will only get worse. If she doesn't believe anda (whyever that is...) then just leave...there's no point in having a friend who won't believe you.

I c u berkata u have evidence tell her if she doesnt believe u tunjuk her the pic and ask the other ppl tht know

go find the person who your Friends boyfriend was cheating on and tell her "the boy u were hitting on has already got a girlfriend so call it of" if they dont talk with the boyfriend and remind them they already got a girlfriend

anda have to be brutally honest. Friends that hide the truth are the ones no one wants.
He shouldn't be doing that to his girlfriend; and that was wrong.
If your friend doesn't believe you; tunjuk the evidence.
And if she still won't take it; tunjuk the evidence up his keldai atau humiliate him sejak posting it on a social media site.
It should teach him a lesson. :)