What's happening to our long distance relationship??

My boyfriend and I have been in a long distance relationship for over 3 months. He lives in NYC and I live in Washington State, but I knew him when he used to live here. We weren't close at all but were always in the same circle of friends. Anyway, he was visiting his family here 3 months ago when he asked me out via email. I was kind of surprised because I never talk to him but decided to go with it. We ended up having an AMAZING date. It was unbelievable how well we got along. The date was 5 hours long and we ended up making out in his car afterwards. That was the first night of our relationship but the last time I've seen him since.

Because of the distance, I was a little weary about pursuing a relationship. I figured that we'd both lose touch...go on with our separate lives on other sides of the country...whatever. He never let that happen. He texted me every day after that date. We've Skyped, we've talked for hours. It's been wonderful. However, a few weeks ago, just as I was opening myself up completely, things started changing.

It was subtle at first. Barely noticeable.... Not so much anymore. First the texting became less frequent. When I mean less frequent I mean, from constant texting to a few texts a day. We haven't Skyped in 2 weeks. The last time we talked on the phone it wasn't the same. He says he's really busy. I want to believe him but, if you really care about somebody don't you make the time?? He used to care so much, and be so involved in my life... He hasn't texted at all in two days. Before that he was being selfish in that he expected me to be available whenever he was finally ready for me but if I texted him he wouldn't respond unless he had "some free time." How long does it take to send a text??! I get the feeling he's playing games now and I don't want to get hurt more than I already am. Like I said, this has only been going on for a couple of weeks but in a long distance relationship hours go by like days. What happened to the caring, sweet, awesome guy I went out with?