What should you do when you boyfriend flirts with another girl?
Ignore it. Everyone flirts. You don't own him.
What should you do-middle school-i like boy with girlfriend-flirts with you-friend asked if he liked?
It really depends. If her boyfriend is your friend, or you are just trying to make another girl jelous, it really isn't worth all the trouble. On the other hand, if you accually like this girl, you can flirt with her but only if she flirts back. If she doesn't, than leave her be or just accept that you two arejust friends.