Is it normal that i have feelings for my adoptive cousin?

I do believe I'm in love with my adoptive cousin. He's a year older than me, and I've known him all my life. Even as I little girl I had a crush on him. I would chase him and try to kiss him on the cheek, and he hated me for it. But only as much as a six-year-old can hate someone... Anyways, around middle school we started hanging out more. That's when I realized I liked him. I tried my best to ignore it, and told myself it was some silly hormonal thing. By high school I had various crushes on other boys, but no boyfriends yet. We were best friends by then, and had (and still do) an insane amount of common interests. I had the occasional dream of kissing him, but nothing father then that.When he got a girlfriend I was a bit sad but also relieved. Now it doesn't matter, I told myself. I couldn't be with him anyway. It lasted about two years, then they broke up. I hated how happy I was when I heard that. When he tells me about a girl he fancies, a unwanted pang of jealousy strikes. I know it's not it's incest. But... It still feels wrong. And my family isn't religious or anything, but I know they would be weirded out by it. I like other guys and would be fine if ended up with someone besides him... But he's the one, you know? And I don't know If I'll ever be able to get over it...