Situationship confusion

Ok so i have been talking to this guy since may..he took me out on a date and the first thing he said was that he’s moving out of the state to across the U.S. We didn’t hook up the first time we met, but he did lean in to kiss me and that turned into a small make out sesh. I didn’t think I would get attached but starting June we were seeing each other every weekend, he would meet up with his friends when I’m out with mine or vice versa, or we would just be together alone at his apartment. We had sex for the first time on like our fourth time hanging out. Sex was great, best I ever had..but he wouldn’t give me an exact date of when he was going to move.. and he also wouldn’t tell me what ✨this✨ was..so I went with the flow. I could tell i was getting attached and growing feelings and i’m almost 99% sure he was too. And i mean we weren’t just hanging out just to hookup..we would go out for drinks together, go to the club, just sit in the park and talk, watch movies.. And last week he ended things with me and said “We should just say our goodbyes now” as if he was moving..SAID THIS OVER TEXT, and continued to say that I was a great girl, he’s so glad he got to get to know me, and i didn’t do anything wrong.

PLEASE SOMEONE EXPLAIN WTF HAPPENED!!! I’m so confused and frustrated by it!!!!!!!!!!!!!!! Did he catch feelings and didn’t want a relationship? Was he using me? Do we think there’s another girl? Help😩😩😩