I give up..I dont want to go there again.?

I was with a fellow for 7 months. we got along really well, were on the same sports team together, had so many things in common, loved the same things, enjoyed each others company. etc etc I could go on and on...then he figures the relationship wasnt getting "stronger" or going anywhere and he buggers off. I am just at a loss. I gave the guy everything I could..we cooked together, hiked together, cuddled together, intimacy/sex was great, he told me im beautiful and sexy, he said its so easy being with you. I met his friends, his family, The only things that was a big obstacle was that I was in the middle of a divorce and I had two teenagers to deal with (who arent the easiest to deal with in the first place) and he had some issues with them.. it has totally eroded my self esteem when I gave this guy everything I would want in return...doing favours for him, bubble bath and wine when he came over from work, dinner. outings, He was equally great and I felt the feelings/thoughts/processes were the same. Boy was I wrong. What the heck happened here? Now I feel used and since I gave him everything, I dont feel I could have given more...dont think I would want to give my all to another relationship. How could I? Why would I? I know he wanted to know that marriage and settling down were in the future, but I think he wanted them real quick...I am separated, but still married. He wanted me to move in with him, but i have my own place with two teens to boot.. How the heck can I do this? In such a short time? Its upsetting and frustrating and making me really upset and dejected. I cannot help that my divorce is taking longer than its supposed to. I cant help that I have two teenages, who arent the easiest. I feel like I dont want to give 100% to any relationship anymore. What happened?