Love/Relationship help?

Me and my boyfriend have been together for a year and a half and during those days we've had 2 break-ups. He broke up with me because he couldn't handle the situation of me always crying and yearning for his help or comfort. I love his comfort and he seem to be very overwhelmed by it but he said that we will stick through it together and now he doesn't know. I burst out tears because I couldn't handle him going out so much and not spending enough time with me. He just felt so lost and so confused whether or not he still wants to be with me. I really want an answer, he has been distant from me lately, not talking much and not hanging out with me much. I don't know if he needs space to get his mind straight but wouldn't you know if you love them or not or want to be with them or not. If you love them, you'd want to work it out and stay. Why must he think about it, if he really wants this or not? I dont know what to do anymore, I am shattered and just hurt by his words and actions...