Do i still love my ex?How to move on with my new gf? please help.. please please?

I had a break-up with my ex-gf six months ago.Then I started to date an another girl.Btw me and my ex were in contact even when i was dating the new girl.But recently my ex decided not to be with me anymore b'cz she can't see me with anyone else and told'I will be there waiting for u'.But now i am missing her like a hell.I am just ping sleepless nights going back to the moments when i kissed her ,hugged her for the last time.But i cant leave my recent gal.C loves me too.What to do?Do i love my ex?Plz hlp