Please just click this...?

I like this guy a lot and he is a good friend of mine. We get along great. The thing is, he sends me mixed signals. One minute we have just a regular male / female friendship, and then the next he is flirting with me and asking if I have a thing for anyone. At one point he admitted he liked me. This was at the same time his eyes were on another girl. Once he found out I liked him as well, he "just happened" to get over her five days later. Afterward he called and we talked for a while. Well lately he barely talks to me when we see eachother, he doesn't return my phonecalls, and we haven't talked online in a while. Last time we talked on IM I got discouraged thinking we were permanently in the friend zone, but then he told me he liked my picture and sent an audible that was blushing. This was a couple of weeks ago. I haven't even seen him or his family around town since then. I sent an email telling him how I felt and I have yet to receive a reply. So my question is ... what's going on?