If he's single, he's free to like whoever he chooses.
Did your friend know you liked this guy before she hit on him? Or is she unaware that you have a crush on him? You can't be mad at her for flirting with him if she didn't know you liked him as well.
If she did know, ask her why she would flirt with a guy she knew that you liked and that her behavior bothered you.
If she cares about your feelings, she'll stop or calm down on flirting with this guy. On the other hand, if she knows her hitting on this specific guy upset you and doesn't seem to care, you'll want to rethink your friendship with her.
if a guy hit on you then started hitting on your friend he is not the guy you want so just move on sister
you should confront her about it. just ignoring the situation and letting it play out will not accomplish anything. tell her you think she is hitting on someone she knows you like and then talk to her about it.
i will tell the guy that i like him the rest is upto him.
The best person to date is your best friend.
learn to like the other guy
don't act like you like him !!
Ask your friend if its okay to like him first.
Get that guy's best friend to tell that guy that you like him, and to ask you out.
kill her
That is not relevant.
There are generally no limits to having a best guy friend. If he is truly your friend it will be just like having a best girl friend. He might not want to get a makeover with you though.
Did you ever mention to your friend that you like this guy? Just try to be friends with him and tell him flirty jokes. In My "Opinion" I feel you should respect their relationship. It's going to be hard to watch your best friend date the guy you like but, if you want your best friend then you will just let this guy go and move on.