What do these signs mean? Is it obvious?

I met a guy last month. The first night he met me he said he wasn't looking for anyone to date, when I asked. This confuses me though because only one month before he told my best friend he was looking for a wife. He is 23, so it makes sense. However, is it possible he has changed his mind and might actually want something with me now? Now that he has gotten to know me?

Here are some of the things he has done:

1. Told my best friend (a girl) he thinks I am very pretty

2. Told her I am a cool girl he has fun with

3. He wants me to visit him and hangout with him again (not alone)

4. He Skyped me twice in two days

5. He texted me a funny picture (not sexting)

6. He makes comments on the guys in my life, and says they should "f" off.

7. His best friend calls me "Evan's girl"-- Evan is his name :)

8. He heard that I was visiting again and he told my best friend he 'couldn't wait to hang with me again!'

Is he looking for sex or what? More? Is it possible that after he met me and got to know me a little better, he is interested in a relationship? Is it not worth it to give him the time of day? I have never had a bf before so I don't know these things.

Thanks everyone.