Should i tell or keep my mouth shut?

My best friend has a boyfriend. but he lives a few states away. Now as if it isnt stupid enough that theyre trying to make it work when I know how she is and it wont, she slept over my house and invited her ex who lives down the street from me and kissed...

him! and all she did was cuddle and hug him and kiss him. should I tell her boyfriend? I dont think its fair if shes just horny and decides to kiss him to both her boyfriend and the one she kissed. did any of that make sense and does anyone understand?

If I were in your spot and my friend did that, I wouldn't tell the boyfriend.
Although he deserves to know, she's your friend...she's a big girl and knows what's right and wrong. Let her deal with it.

Best to stay out of it. Not your place. Offer her the suggestion of coming clean or not doing it again but don't think you have the right to decide what happens.

I understand she's your friend, but to be perfectly honest its not your place. Granted long distance relationship are hard they aren't impossible and they both knew what they were getting when they started.

Not to mention yes you see what she's doing, but you have no idea what he might be doing. Is your friendship really worth messing up? In time all things done in the dark will come to the light.

ok so I was in a long distance relationship for a couple of months until my girlfriend decided to move to LA for college. Yes, it was really hard, but we did it and everything is working out great. If your friend is doing this with her ex, chances are she doesnt really like her boyfriend or shes just a whre.

I feel bad for the guy because I would be crushed if I found out that my girl was doing that. Even if you do tell him, he'll have a hard time believing you. You should talk to your friend.
Long distance is only for the serious ones