So, there's this guy...?

I've liked this guy for a while, or at least ever since I learned that he was interested in me. Last Wednesday, we went bowling with our church, and were flirting a lot. When I went to go get something to drink, he asked my friend if I was single and if I'd be interested in him. Later that night he called us and it was kind of awkward so we just hung up when there was nothing else to say. I texted his friend (the guy I like doesn't have a cell phone) and said I was sorry for hanging up and then the guy I like started texting me and we agreed that we were definitely talking. The next day I was at the pool all day with my same friend, and we were texting then too for about 4 hours. That's the last time I've talked to him, and I think that if you say you're talking to a girl, then you should at least make an effort to talk to them! I want to tell him how I feel about it all, but I don't want to seem obesessive and call his house.