Have I lost all hope? Guys please help!?

When I met and hung out with this guy, I could tell that he liked me (followed and teased me quite a bit, while being a gentleman). We went on a great first date last week and he some of what he did when he first met me, but also added showing off, looking at me, and stuff. He ended the date by giving me a big hug that was a few seconds long , telling me that he had a good time, that he would see me later and to have a good night. A few days later, he went on a vacation with his family at Laguna Beach, California (which he mentioned several times on the date that he would be going ). It was his birthday on sunday and I texted him "Happy Birthday such and such. I got a text real quick saying thanks. I texted him again, several minutes later, saying "23 at Laguna Beach, you lucky bum ;)" but he never texted back. Is it possible for this guy to still like me but to not contact me during his vacation? I've gotten mixed signals, some say that if he hasn't contacted by now that he isn't interested, others say he's on vacation and to leave him alone. He is on vacation with his family and he's been there less than a week. We've only been on one date and been together once before when we first met. It's not like we're buddy buddies yet and we're still getting to know each other. Does he still like me and is he taking this slow with me? Do I have anything to worry about?