Caught feelings -- what to do

So, I started a summer job in June, and a few weeks in I started to sort of push flirtiness with my super attractive coworker-I couldn't tell if I was into him, so I managed to get him alone and we talked for a long while at work. After that I had an excuse to message him on Instagram, which he responded to, and we started chatting. I initiated the convo, asked for his snapchat, and eventually asked for his number. At first it was innocent flirting, but we started talking about casual hooking up. I am NOT a relationship kind of person, I really don't like committing and I much more enjoy messing around and having short term fun with people. So this coworker and I decided to hang out; he was up in my state for the summer job, but he is from Cali, so I offered to show him some of my favorite places. We ended up cuddling on the beach and then he asked if we could kiss, and we did. At this point we both consented to messing around but not doing anything serious - and here's why: I'm 18, and he's 25. It's not a huge gap, but both of us are a little uncomfortable with it. We both kept everything on the down low and made sure no one at work found out. Well, fast forward to August, we have been talking LITERALLY every single day since I first messaged him, all day chatting. We have been having more than just sex, we would have sleepovers where we cuddle all night, we would give each other passionate kisses and then gaze into each other's eyes, and we both admitted to liking each other. Now, my last day of work was two days ago, and I'm heading to college in Seattle. We always knew we wouldn't ever commit or anything because of the distance (Cali to seattle) and the age (18 to 25). But now I have really caught feelings for this guy, I think about him all the damn time and miss him already. He is coming down to visit me at the end of the season (In a month), and here's a problem... ALL my life I have been so excited to go to university, meet cute boys, flirt, dress sexy, go on dates... But all I can think about is him, and I don't want to start something with another boy since he's visiting in a month. It's completely ridiculous that I'm hung up on him, since neither of us will commit to a relationship. He has told me he likes me, but he also knows nothing will progress with us so he encourages me to talk to other boys, but still texts me everyday. I really would love some hard-love advice telling me to get over him and live my life, it's just super hard after getting so attached.

Thank you for reading this, I'm glad I had somewhere to sort of rant!