I've got boy problems?

SO here's the thing; I moved to FL about 2 years ago from CA. While I was in Cali I had this a thing for this boy, and then was whisked across the country. We had a relationship over the phone for a looooong time with hope I would move back or at least visit - never happened. We stopped talking b/c it was upsetting, so after about a year of no interaction, we started talking again b/c i'm actually visiting Cali this summer for sure and we finally get to see each other. Thing is, I have a boyfriend of 9 mos. here in FL. My boyfriend is a great guy, but we don't get along very well anymore.. I still care about him lots though. My question here is: Should I break up with my boyfriend b/c I can already see that me and my boy from CA are going to have relations? OR, should I just take a small break with my boyfriend when I leave for the summer? I dont know which is best for not hurting anybody's feelings, including my own..