My girlfriend recently said to her sister she is still in love with one of her exes she dated last October... Her sister told me and I was heartbroken... But My girlfriend tells me it's nothing... And ever since she said that she is still in love wIth him... She acts different...

I love her to death and want to be with her... Please help

How old are you both? Don't be so insecure, see what happens.

How old are both of you? And please don't overreact...

Also what is 'love'??

Just wait and see what happens okay. Or directly confront her.