Should i keep fighting...?

So i am like in love with this guy. His name is Raine and we have been off and on for like 7 months. Well he would always say he loves me he would never leave me... We were even gonna get married at one point... Now that summer is here and we r out of school he dumped me and went after some 7th grader and we r going to be a softmore... He has told me its jus not there anymore but yet he an sit there and kiss me and hug me like nothing is rong. I love him sooooo much more than my own life....Should i keep fighting for him or jus let him go?