Is it good for your best friend to go out with your ex-boyfriend and not tell you?

If she was a true friend she wouldn't and if she seyz dat she DIDN'T KNOW and you know she doez then.... that shows you clearly that shes not a friend you should stick with If it was an accident then thats were things get complicated and thats were you hav to make that desision to stay friendz with her or not.... in the end Friends come and they go... Good Luck!

K well ah one how oculd she not know if she was your best friend?
Jesus...this is just what my 'friend' did to my best friend. But my 'friend' is just desprate so whatever...
But anyways, are you comfortable with that? I dunno you didn't say. But if you're not just tell her, but if she really likes her maybe you could let her just stay with him and just wait.
Sigh, but just tell her that you don't like it and see what her response is.

Id be pissed.

I don't think shes a true friend. A true friend would at least ask you your permission or what you thought about it. I mean, she didn't even tell you! What kind of friend would do that?! XD

Heck yes that's wrong! And if she was truely your best friend she knew he was your ex! She's lying to cover up her own ass. Kick both of them to the curb Honey.

omg no.thats horrible.she had to have known.thats a huge no no when it comes to friendships

ok thts jst stupid of her. if she is really ur best friend then she should of known tht he was ur ex. and in my opinion thts jst fukn selfish of her to even thnk about doin tht to u, her best friend. if shes gunna do tht then she nt a very good friend, sry to hav to say tht, bt tht wat i thnk