help, im not sure what to do.... atm my life isnt very good i would like more then one answer please!!!

well, i told the guy i like him, as i am probs moving away.... he said he isnt into teen relationship and that obviously were friends, we both are pretty close to eachother and im scared as the only contact i have with him now is via facebook that he is sick of me... i dont know what to do i feel pretty bad all the time and im not sure wether to give him some space or just give up and accept that he doesnt really like me. but the thing is i dont know that i asked him if in say two years would he be interested and he said it depended on so many thing. he said he wants a serious relationship and even though im only 13 in very mature and want a serious relatioship to i dont know how to show him this and i may never actually see him again.... please help.... dont just say find another guy cas i have been heartbroken before and had plenty experience with the whole pain thing even tho im young...... i just want to prove myself to him but im not sure what to do.... im not sure if he is getting sick of talking to me and i dont want to bombard him with emotion cas guys hate that....