Yes, from your description he is almost certainly crushing on you. However...
Tequila wrote:
Stop this now. For his sake. Don't allow it to go any further. He has already spent a lot of time and energy on you.
That needed to be reiterated. To do otherwise moves it into the category of "leading someone on," which is big no-no. That causes pain to the one being led-on.
I wouldn't hint at it, as you suggest, Summer. Be up-front about it & be perfectly clear. You'll both benefit in the long run.
I'm sure starting this conversation has to be as hard as starting the one that goes "X, I think I like-like you...."
So it maybe this conversation looks something like:
"So-and-so, I'm kind of sensing that--and correct me if I'm wrong!--that maybe you might be interested in me romantically? Or am I reading the signals wrong? (Because I suck at that!)"
The conversation is very different if you're willing to give it a try to see how it goes.
Make sure you're both alone, in case he's on the spectrum, too. You don't want to risk humiliating the poor guy.