My boyfriend slept with my best friend. I know they did. They just don't have any proof. Do you know how I should approach them on this matter, perhaps a subtle way. They both act funny, especially the girl. And my boyfriend was cheating with other girls. Several people told me that they messed around, they used to flirt a lot with each other. And my.. exboyfriend is very jealous will do almost anything to be spiteful to me. My best friend was jealous of us and a big part of why we broke up. Any advice on this. What to do please. Thanks

You don't, if your boyfriend slept with someone else, you dump him and just move on, there is no need to prove or approach anyone.

So you are broke up, just move on, by trying to prove things, you are merely showing you are not over it, and want to get back at them, just move on

I would suggest dropping the boyfriend and getting a new best friend.
Walk away:rolleyes: At this point even if it's not true, you will never trust either one again.:(
End it now and start fresh, don't even give them the time of day.:) People who do that aren't worth it.

Uh, doesn't sound like a best friend at all to me... why would you want to call someone 'best friend' if she's jealous of your relationship and would possibly/or has slept with your boyfriend?

If your ex boyfriend has already cheated on you in the past and you KNOW about those already why do you want to prove he's still a cheater? & even worse prove it with your so called 'best friend'...
Drop them both, they obviously could careless about you... Too much drama you don't need to deal with be mature and walk away.

If you're so convinced that your best friend slept with your boyfriend, why do you need proof? You already don't believe them anyway.

No trust = No relationship
No trust = No friendship

You don't need proof, you need better friends.

You dumped they guy, now dump the girl.

What are you doing with him! He is a cheat! That's someone you want to spend time with?

this is my post. a similar thing happened to me earlier this year.

I understand how u just want proof. That's what I wanted 4 most of this year. But u have 2 just make yourself let it go (it's hard, I know). It will literally drive you insane if you don't. If they are giving you any reason to feel the way you do, then u need 2 find someone who won't give you those suspicions. Just be upfront with her and tell her that it's hard to shake a suspicion like that, and you just believe she did it, so you don't want to have anything to do with her until you see proof (and you probably won't see proof). The only ones that really know (and will ever know) exactly what happened are those two (and God, if you are religious). And those two aren't saying anything.