<human>: Can you summarize the given text in a few sentences?

My best friend and I have known each other for 2 years. This summer is the first time we've both been single at the same time, and we both began to realize we had feelings for each other. He's a really great guy. I dated an absolute asshole for 3 years, until we broke up about 2 months ago, and this was the guy who picked up the pieces, was there for me, and wants me to be happy. He's one of the best guys I've ever met in my life and I know he'd make me happy.

But for some reason, ever since I found out he had feelings for me too, my feelings have felt a little off. Instead of coveting alone time with him, I try to avoid it. I find myself nervous around him, but not in the "butterflies in the stomach way". In fact, I don't really feel much of that "spark" at all, at least not the way I'm accustomed to when being around someone I like. Being alone with him makes me anxious now, when it never did before. We haven't done anything except cuddle on the couch a bit, and while that felt nice at the time, I get nervous sitting close to him now and I don't know why.

We have so much in common. We make each other laugh, I can be myself around him, and he knows me probably better than most. He's also really attractive, so I don't know why I'm starting to feel so against dating him. All of our friends have commented on how good we'd be together, but instead of wanting to talk to him, I find myself taking longer and longer to return his texts because he makes me feel anxious for whatever reason.

Is this normal? I don't really want to jump into something serious right now, since I just got out of a shit relationship, but I don't know how I went from really liking this guy to questioning everything overnight. Any advice/insight?
<bot>: Thought I liked my friend, found out he liked me too, and now I'm second-guessing my feelings and feeling anxious around him. Don't know if this is normal or not