Do NOT want to be that girl again, please help?

Dominique and I have been best friends since freshman year of high school. We immediately knew we had an attraction for each other. He had a girlfriend and I was his best friend, we kissed , we hung out and I mooned after him all 4 years. Finally senior year I was fed up being the other girl (mind you virgin entire time) I stopped talking to him. Our families tried to get us to talk again to no avail. The summer after graduation he finally came around and asked me to be his girlfriend. I declined and we stopped talking. I didn't want to be the ego stroker for him anymore.

Fast forward 2 years we are 20 &19. He has since joined the military and it was like we neverseparatedd. He really needed someone in his corner and I was there. We felt the same attraction for each other and still had yet to actually date. He decides to say I've always been there for him and wants to get married and what not. I accept thinking " finally he realizes". He gets shipped overseas and I believe he went through somethingtraumaticc and shut down on everyone including his family.

Six months later he contacts me again trying to apologize and I would have none of it. I told him I was so hurt and looked dumb picking out wedding dresses and everything to be blown off again and told him to stop contacting me. I told him he is a child and he needs to grow up and realize that I always had his back and he just keeps kicking dirt at me. Im done.

Fast forward 2 more years and he hits me up on face book asking to meet because he is on leave and in town. We hang out and its pretty awkward so many hurt feelings and questions. We start to talk once in a while. He left asking me to visit him in new mexico and I agreed reluctantly. I was really worried that this will be just another pie in my face. I told him I am not playing this 10 year game with him and to stop wasting my time. He states that he is very much attracted me and knows he has messed up and really wants me to come down and visit and stay with him for the week. He says he is very much attracted to me and has done a lot of growing up since then and wants to talk to face to face about why he proposed and left me high and dry.

I feel so dumb but I am still attracted to this man and we both were young and dumb at the time and have grown up. I bought the plane ticket and ready to see him next month. Question is should I give him another chance in my life or should I let him go after his explanation?