Back in an old relationship is it real love?

k, odd question but here let me summarize. my ex girlfriend who had dumped em for someone else in the first place came back to me talking about how i'm the only guy she was ever comfortable with and stuff. and of course... me being the guy i am i took her back. but. i'm in one state and she's in a whole nother state and i know the choice is mine and all that. but i wanna see if i can't get some honest opinions here. she's the love of my life. but i think it's more than likely a one way street anyone have or had a similar situation? if so explain. anyone think it's worth trying again? much less with the whole distance factor. i just don't know what to say or do anymore share your stories if you will