Should i wait for my ex bf to come back to me?

i met my ex bf at Church in 2005 at Diciple now, and we dated the first 3 times his grandma and sister broke us up then the 4th time(when i moved to missouri away from virginia) he ended up asking me out again, and we got engaged but that ended at 2 weeks, then last year i didn't get to see him at all where i loved cause i had no computer at my house, so i moved back to missouri in febuary and he and i reunite agian ,and he told me he had used me as a rebound the 4th time, then he asked me out on March 23rd and he told me he had no intentions in breaking up with me, but after 2 weeks and one day he ended it, he said he was having family problems, which his mom and aunt have cancer, and his grandparents might be getting a divorce. but the prolem is im still in love with him, sicn ethe day i met him i was only 15, i fallin inlove with him, theres never a day i dont think about him, i wodner if God took him away cause its not meant to be right now or what. my friend ( his ex gf) told me that even thought it hasn't worked out yet does'nt mean it wont work out period. the problem about him is that he cant keep his promises, and that last one has to do with his virginity, and im not even sure if hes still one or not not from what the people at his college are saying. sorry for the typos i type too fast. but i'm not infatuated with him, im really in love with him, its more then Infatuation. im so emotionally attached to him, his personality his looks, his atitude , jsut everything exsept his regres, makes me so happy,, i wanna be with him forever. but he cant commit to anybody. does it have to do with age were both 19, and he'll be 20 in like 2 weeks. i want God to help us get back toegether, cause i want him back so bad , its been 2 months since hes called me, and it upsets me, i understand it takes time, and stuff to get over, but, i dont, i cant get over him, its like a sign is tellign em not to give up hope, i can date for now, but if he comes back to me i might go back to him, if i can trust him agian can someobdy please help me without being rude. i think hes confused on what he wwants so hes just expermenting right now