Resolved Question

Help! I need advice. I've been dating this guy for 2yrs. It was sort of a rough start in the beginning. We broke up in the beginning after just 3 months because he had to move away due to family emergency with is mom. we kept in contact for a bit after but then lost touch. I loved him so much I've always thought about him day and night. Then 6 months later I broke down and decided to email him just to see how he was doing. He was delighted to hear from me and told me the great news he was moving back to my town for school. He said he had wonderful memories about us but he didn't feel that we would work in the long run because he can't get over some things that happened in the beginning of our dating but other than that he's still drawn to me and would like to see me. when we saw each other sparks flew. It was as if he never left. But I was still heart broken from when he left. we started to see each other again. We even went backpacking through Europe this summer. we fought during the trip during some stressful times but survived them. But we never talked about them in details (i think this is where the pent up anger began). Long story short, when we got back we saw each other a couple more times but I sensed he was wavering, he was lovey dovey but in the back of my mind something was not right. Then recently he on a school conference in Europe he sent me a email saying "we need to talk". then he went on to say being in Europe brought back vivid memories of our fights and also how he didn't like the way I behaved and how inconsiderate & disrespectful I was being towards him. Then he went on to say (here's a copy of his exact words in the email):
"I watched another episode of californication and there was a line, "you shouldn't steal a women's prime years if you know its not going to last". That line really got me.

You have a brunch of wonderful qualities and that is why we have been together this long, but I really can't see myself being happy within our relationship for the future, despite really wanting to. I have been wrestling with this the whole time that I have been here, and I feel like I need to let you know now.

I still want to stay in touch; however, I'm thinking a little space right now would be best for me."

when I received this email i was crushed. I don't know what I should do. Many times i wanted to go knock on his door and talk to him in person. See his face expressions for myself. I'm so depressed from this. I haven't responded back to his email yet. I'm thinking of writing a hand written letter and mailing it. I was bed ridden for two days after this. But I'm trying to pick myself up. I'm going to the gym and taking care of myself. I'd like to know from you guys what I should write in the letter to increase my chances of getting him back. I really love this guy. Sorry this is so long.