Help! Should I keep him around or drop him?

For the past year i've been on and off with the same guy, recently I told him I couldn't do the back and forth anymore and he apologized and said he understood. We didn't talk for about 2 weeks and then he texted me that his friends missed me, which I thought was super weird but I told him to tell them I say hi, after that we started snapchatting again a little bit but no conversations. I ended things because I realized that we weren't going to ever officially get back together. After ending things I found out that I got accepted into a study abroad program in Bermuda this upcoming fall semester which made me realize I don't want anything serious until I get back in December. We live in the same town and I spent all of last summer with him, I want to be able to still hook up/hangout with him this summer but I don't know if its a stupid idea. Over the past year he's really hurt me and last night he got with another girl because his location was at some random place where none of his friends were at 3am. so I know there's another girl in the picture (which i know i can't care about because I ended things) this really hurt me. Should i just completely stop talking to him? or should I keep him around and hangout with him this summer? the sex is amazing and I miss him like crazy because we did get along super well. Ever since I ended things with him about a month ago now there has been nobody that has tried to talk or hook up with me, not that I need that somebody but falling back on him this summer when I go home seems like such an easy thing to do especially because I leave in the end of August and am gone until the end of December so I don't even want a boyfriend anyways. But he did really hurt me over the past year but im not sure if i should never talk to him again or use him like he's been using me.

Help! Should I keep him around or drop him?
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