Be boyfriend & girlfriend. Your friend shouldn't care because he is her OLD or EX boyfriend:-)
you could try asking them.
Then talk to her about it. You could be close to him, but don't do anything crazy. You know the friend code.
just go out with him. its not her business. if you really want to you should follow your heart. if shes not your best friend anymore then who cares? everyone has a ex.
Make your own personal decision. Make a pros and cons chart about the situation.
Yes you should, as the old flame could rekindle again.
No, you should not ask anyone out who already has a boyfriend or girlfriend. If they break up, you could ask the person out.
just tell him that you have a boyfriend or you could discuss it with your boyfriend and tell him to tell his friend...
Well it depends. Is your boyfriend's best friend recently been dumped? Cause then he could be confused. Or maybe, you make your boyfriend really happy and his best friend wanted to be happy too. You should tell your boyfriend if you really love him.
If this is a very good friend, you could have a talk with her about this. Tell her how you feel about this boyfriend and that you would prefer to not go out with them as a "group date" thing. This is your friend....you need to leave her boyfriend alone, so don't even put yourself into a situation where the two of you will be alone together. Now, if her boyfriend hits on you, you should immediately tell your friend. You will also know that this guy can't be trusted, so your "like" should disappear.
It depends. You could tell her but be warned, if she is a really close friend you'll risk losing a friend.
It could be. A mutual friend is someone you and another person both know. If you and a friend both know your boyfriend/girlfriend, then your boyfriend/girlfriend would be the mutual friend.
If you are asking if you should date your good friend's boyfriend then you should ask her if she minded. If she does then it is a good idea not to date her ex because there is still a chance they could get together. If you are asking if you can still remain friends with the boyfriend and your friend then see them separately and let each of them know you are doing so. Honesty is the best policy.