break-ups

it is a very complicated situation. we dated once before but broke up bc he was scared of the relationship and i had just left for college and it was long distance.. i had fallen in love w/ him.. and then went to hardly being friends at all.. then our friendship got back on track and we grew closer again.. eventually we got back together (8 months later) and our relationship was better than ever. we kinda picked up where we left off and grew from there. i fell even more in love w/ him & he had mentioned marriage a few times.. although the subject scares him. he has seen his mom go through two divorces and does not have any good examples to learn from. our relationship was great.. and this time when i left for school after the summer we stayed together. but a few days ago, after half a year of being back together (although it seems like so much longer than that) he broke up w/ me again. he apparently isn't "in love" w/ me anymore.. but idk. he has had some recent disappointments and doesn't know what he wants to do with his life and is looking into the military. he says he never did see a future w/ me (which makes no sense bc he is the one that brought up the whole future subject before i did). i'm in love w/ this guy and am supposed to go back to the friends zone again? yeah right.. but he says he needs me there. idk what to do and how to let go. i dont know how to get over him. it's the hardest thing for me to go through.