Confusion.

What do you when you think you like someone and he was just dating your bestfriend.?</3

I back off.
I don't risk hurting a friend if she likes him or has just broken up with him.
Unless she is 100% fine with it, it's the biggest taboo of a friendship. There are unspoken rules.
*Gem*

It depends on how long they were going out, if your friend still has feelings for him and if you still want to have her as your best friend because you never know she could stop talkin to you all together! I say back off too, unless you like him enough to lose your friend but remember that friends will always be there and guys may not!

Well... if gonna happens this to me i will get hurt.. but it doesnt mean i will get angry to my friend. if the someone i like, also like my friend i let them be...dont lost ur friendship bcoz only of one person or someone...well that only my side..

Uhh, as angsty as I am to my friends in these terms since they don't give a care about doing that with my exes, I talk to them if I do like the guy and ask them if it would be okay...but ask them in person not over the phone or IM or notes or any of that, because often a friend will lie and say that it is okay and than they get really upset seeing you two together.

So judging by her response, how quick it is, her body language, her expression, etc...you should be able to tell if she's really lying or not.

But it also depends on how long they were dating for and everything as well, because odds are they still might not be over each other, and they might still want to try and work things out.

Best wishes. (:

All I've got to say about that is TALK TO YOUR FRIEND ABOUT THIS. See how she's doing with it. But maybe give it time. Admitting you do right away may bother her.

Well for me, it would depend how long they went out; how deep the relationship was y`know ? But I would definitely let her know before doing anything . You never want to do something before talking with you`r BEST friend . Seriously . It`ll just scrwe everything up . Give it a little time -- If she says she`s totally okay with it, ask her again for reassurance . You never know what they could be thinking .
..__MiNDYY

I dated my friends ex.. then she dated him again.. then my other friend dated him.. we just passed him around. he was a good guy and deserved the right person.. but it wasnt any of us.. lol

*if anyone is willing to give advice to me about uhmss... guys.. please PM me... i cant write about it on here or my sister will read it..