My weakness.... (this is long)

So my ex boyfriend and I broke up back in March (we dated for like 4 months but were friends before) because he was deploying. Long story short, we ended up hooking up for about a month after and then ended up having a really nasty falling out. Fast forward to july... he got back from deployment about 3 weeks ago and he contacted me first. We have all of the same friends since we go to school together, and when I say all I mean all. We have been going out for drinks and I've ended up at his house twice. He was being very flirtatious and touchy while out with friends and he even was visibly annoyed when another guy bought me a beer at the bar. He has made it very clear that he doesn't want a relationship right at this moment because he is leaving for a month. That's fine because I don't have the time either right now considering I'm taking 18 credits this semester. The other night, I decided to put my foot down and say I was sleeping on the couch because I was done stringing myself along. We ended up fighting and then had a long talk about the breakup and the future. He ended up telling me he 'more than liked me' (his words; still have no idea what to make of this) but it's not gonna work right now. I agreed and that gave me some clarity and i thought that meant things were going in the right direction. Fast forward 2 days later and he won't speak to me. What in the hell am I doing wrong? Like do guys really just tell girls what they want to hear to get them in bed? Or could he just be struggling internally with his feelings? Please give me some insight before I think myself to death.