I am in a fix...decision on love

I had been in love once and how!I was ready to give to all to my darling but she ditched me then and now after all that pain i have undergone because of her,she wants me to come back to her.The way she speaks now also drags to her but i have been hurt once and very badly and i am not sure she will not hurt again.But when she speaks i feel like am almost going to say yes and come back to her and when i think logically i feel i'll be having more problem because of my emotional decisions.
What i should do,i dont know and i feel like running away to a far away place there is no love and am left alone.