Neither of you should get to date him.
well if you like your best friend then you should go out with him|her... but if you don't your best friend then you should tell him|her, that you are going out with someone already.
Your best friend should not determine who you date, but she might have some insight that you are not wanting to see about him. You should definitely find out why she does not like him and then make a decision about dating him.
if your girlfriend AND your best friend turned on you- wow- that must hurt
Look at it the other way around. If he was with you but flirting with your friend. You should probably tell your friend.
Say to your bf: " Look we have been dating. I get it shes your best friend but she should stay your best friend and I can stay your girl friend. I really like you! Please don't break my heart."
Then don't be his friend anymore.
Your best friend might be dating a jerk because they dont like you anymore, try asking your friend to spend more time with you
If the person that you like is dating your truly best friend, leave it alone. There are many people in the world that are available for a relationship, but a best friend is hard to come by. Mark that person off limits out of respect for your friendship. Maybe they have another friend that you can get to know? People tend to associate with other people who are like them. You might find that the friend is more your type anyway!
Make him jeolous by dating his best friend Make him jeolous by dating his best friend
you should not ask out the guy while your friend is dating him. You do not want to risk losing your friend. If they two of them do not work out then by all mean ask him out.
say you don't like him in the same way as your friend could get hurt. but if it is truly love at first sight then explain to her and if she is a true friend she will understand.