Don't bother with her. She's not ready. Find a different girl.
wait it out, or do some really low-key flirting
You show her that you are better than her ex.
they are just trying to make you jealous and they probably aren't over their ex's yet
Answer If you no longer have a thing for your present girlfriend, why not be a man, and end it, then you can go out with the other girl.
It sounds like he was not over the first girl, and is consciously or subconsciously reliving his prior relationship through another person.
You move on, don't try to get him back. Cause he doesn't like you, but another girl.
start thinking of her as a friend and not as a ex girlfriend. treat her as if she is your friend and try to get comfortable around her as a friend.
liking and loving is 2 different things i wouldn't suggest you to go out with any girl otherwise it will be a replay of your ex and she wouldn't be at fault you would.
First things first: Do not fight him! Avoid a confrontation at all costs! The best way to do this is to wait it out. DON'T make any moves towards her, she's clearly not ready, and it will only provoke her ex. Give her and the ex time. The ex will simmer down, while the girl will slowly but surely get over him. By waiting, you'll get the girl without the fight. Just be careful not to do anything that would provoke the ex and don't try to push the girl in to a relationship she's not quite ready for.
just let her go. obviously if she is in love with her ex she is not the girl for you.
well its not fare to the girl you are dating now at all so you need to either get completley over your ex and start loving this girl or leave this girl and get back with ur ex
You choose who you like the most. If this is your ex, then fight for her. If this is the other girl, tell her how you feel, and hopefully you have a chance with her.
You can simpley tell her that you still have feelings for her. Sometimes it takes a lot for a girl to get over her ex and maybe she isn't over you. Just be sure that she can trust you. The last thing she wants is to have her already bruised heart broken all over again.