Because I don't know if he likes me and I don't want to seem like a complete dolt if he doesn't.

I've had the problem before. I once had a major crush; we got along great; he was good to the kids, etc. And he had no problem coming over for candlelight dinners, followed by sex. After three years of coming over for dinner and some nooky, he got engaged to, and later married, someone else.
He was willing to spend time with me and have sex simply because he's a man. He wasn't actually interested in me. I made a decision not to let that happen again.

The next guy was also good with the kids, but invites to dinner did not include candles and sex wasn't on the menu. He stuck around for five years, but never as anything more than friends. When I finally did spring for candles and it was an obvious "let's get frisky" set up, he stopped coming around. Just too awkward for him. So, I'm not going to let that happen again either.

That was three or four years ago, so I haven't had a friend or love interest or anything, for a while. I like this new guy, we have a lot of common interests and I'd like to get to know him better. BUT, I don't want to end up feeling used and disappointed again, nor do I want to scare him off like I did the last guy.