Do I seem uninterested?

So I'm talking to this guy and I like him a lot. He is sweet, mature, and caring, not to mention totally adorable. For the past two days he has called me just to chat, and yesterday he called me, than went to see a movie and said he would talk to me later and called me after the movie. I thought that was really sweet of him. I think he really likes me. We can talk on the phone without it being awkward at all and for an 18 year old guy, that is rare. However today he didn't contact me, but it was also Friday night and I told him I'd be out. However, because he does most of the calling, should I let him take the lead and contact me again next or should I initiate something? I don't want him to think I'm uninterested but I also don't want him to think I'm sitting waiting around for him.

We live somewhat far so that is the reason why we are not hanging out too much.
Do I seem uninterested?
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