WTF is this guys deal?!?!?

I met this really hot guy in the beginning of this month. We hit it off and had instant chemistry. He took me out on a few dates. He called/text me everyday. he gave over and met my mom. He brought me over his house and I met his mom and dad. We had sex after a few dates. He kissed me goodnight and text me later again that night. A few days went buy and I heard nothing. I text/Facebook him asking him what the problem was. He told me he broke his phone and that he wasn't blowing me off and he was sorry if I felt that way. He has since then randomly text me here and there but not consistently and hasn't called me. I have physically not seen him since I have slept with him which was Aug. 15th. He did tell me he started a new job and is working a lot of hours which I did verify was true. He also told me his grandpa fell broke his hip and was in the hospital and had surgery which I also verified was true. I told him that if he didn't want to talk to me anymore that all he had to do was tell me. Again, he insisted that wasn't the case. What is really going on with this guy?!?! It appears hes blowing me off yet he insists he isn't and when I confronted him and said h wasn't. He still randomly texts me. Honestly, what should I do? What the hell is going on?!?! You would think if he wasn't interested he wouldn't contact me at all. I need some good advice. He's 25 and I am 27. Please help.