Do you leave YOUR RELATIONSHIP if your girlfriend loves her ex?

If your girlfriend is in love with her ex that does not leave much room for feelings for you. You should tell her you have to part with her as she needs to work out her feelings whatever they may. She may have just jumped into a relationship with you on the rebound and that is not right. Give her space and take time for yourself - you may not recover this relationship but you deserve better with someone that can offer you the attention and feelings just for you.