He broke up with me...how do i get him back?

I'm in high school and my boyfriend and i were dating for the third time. the two previous times I had broken up with him because my life was too complicated for a boyfriend at the time. so this time we got back together and i thought it would be different this time. we both said we loved each other and I was ecstatic cause i thought we would last for a while. a little more than two months in he broke up with me because he said he didn't feel the same way anymore. he keeps telling me i need to move on but i still want him and no one else. how do i get him back? please help!!