I just recently broke up with my ex of 1.5 years. Before he went out with me, he loved this one girl to death although he got rejected. He told me he moved on before we went to the relationship with me, however it seems like he has not moved on and still have feelings for her. During the first 2 months our relationship, he called this girl he loved before because it was her birthday. She was out of the country at the time. I found out and didn't like it, I told him to never contact her ever again. Months past by and we fight a lot. About a year and 4 months of our relationship, he broke up with me. Then, I found out that he tried to contact her again. He e-mailed her to see how she's doing. Although I read this after he broke up with me, he e-mailed her when we were still together. I was so upset. After this incident, he told me he loves me and wants me back and he will delete all her contacts if I come back with him. I cannot trust him now because a year before when I ask him not to contact her again, he did it. Behind my back, I read his chat log with this girl sister that he met this girl 2-3 times. I was so mad and upset about that. I don't know what to do. He still wants me back up til now, do you think that I should believe him that he loves me and care for me? If he does care, why he try to contact her again and meet up with her? He also told the girl's sister that having a girlfriend is hell. What does he want from me? Is he just using me as a rebound? I am afraid that even if I am with him, his heart always belong to that girl which hurts me a lot since I love him so much. I am mad in the fact that he get me into this mess. Do you think I should trust him?
Of course you can't trust him. I doubt he will ever really get over this other girl. Heck it sounds like he's even friendly with her sister!
Personally I don't give people second chances who have deceived me. The only way they will learn not to do that is if they face CONSEQUENCES for that behavior, so don't let him talk you into anything. Not for five years anyway!
Find a guy without this baggage would be my advice.