Why do i dream about him when he makes me really mad?!?

There's this kid at my church and he's a reeeal show off and a flirt and...just really obnoxious. I don't HATE him but i strongly dislike this kid. (were both 16) I dreamed of him once in the summer and we were really good friends and it seemed like he liked me. A few nights ago, i had a similar dream but the feelings were ALOT more intense. In either dream I didn't seem to dislike him at all...but then in the second one I was like strangling him (not for real..it wasn't hurting him) because he knew ony secret of mine. He said i was hot...among other things. and when i was touching his skin, it felt so real! on sunday, when i saw him at church.........i remembered the dream and was a little embarrassed. I kinda wanted to touch him in real life..lol. ANYwayss. recently, he also tried to almost make amends with me.

I do not like him.

i really like someone else but i've never dreamt about that person. :(

help appreciated!! thanks