Am i normal?

Well first of all thanks for taking the time to read this. The reason i'm on here is because of my sexual feelings towards my cousin. She's 21 and i'm 17. When i was still a young child we were close and she would baby sit me a lot, i still remember things that we would do like playing board games etc. Even one time when i was like 7 i was in underwear and she kept on hugging me and i got a boner and she kept laughing saying "what's that?" even though i knew she knew what it was. But certain events drove us in different directions and we don't see eachother too often now. I don't really think this way about other girls but whenever i see her all i can think about is scenarios where we'd both end up having sex. Just today she came over and layed on my bed watching tv she was on her sides with her butt sticking out(probably the best butt i've ever seen) and i had the urge to go at her and give it to her in that position. I know i shouldn't like her that way so i looked to this place so i can talk about it and hopefully find a way to deal with it so those thoughts can go away.

A nice butt is a nice butt. Perfectly normal to be attracted to. Doesn't mean you should act on it, but don't stress about it.