<human>: Alright so basically me and this guy have a complicated relationship. We went out for 2 months before I broke up with him but he realized that the reasons I broke up with him were extremely valid and changed his ways after. We decided to hang out but be "exclusive". Basically we were broken up but we acted exactly like how we were when we were going out. Now he's having a summer fling and his reason for it being okay is because we're single. 

I suggested us to not be exclusive in the beginning because we broke up and we're technically single so I didn't see why we had to see only each other but he was NOT okay with it. I decided to stay exclusive. However he suddenly changed his mind when this girl started hitting on him. It's also a long distance thing because in the next two months we'll only be able to see each other 3 times max. He wants us to still be a thing when school starts and he says that this fling will end right before we go back to school. I've already noticed that he's slowly texting and calling me less. 

We still really like each other and I'm allowed to have flings too but I don't know what to do. Part of me wants to move on because I don't want to just be a side chick but the other part tells me to just get over it because I'm talking to a guy on the side too (only talking, he on the other hand has already gone on dates and kissed this girl). What should I do?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Guy wants to have a summer fling only after realizing he could get girls... But I suggested the idea in the first place.