How slow is "slow" for recovery from breakups, and how friendly can "friends" be?

I've been seeing a guy for a little more than a month now, and I can't quite figure him out. He's a friend of friends, and I've had the feeling for a year or more that he digs me way, but I didn't know how. He always hugged me warmly although we weren't really friends, and touched my arm when talking to me etc (sounds way flirty, but he's a warm, sociable person, so who knows). He has also been reading my blog for a long time. Then finally when I was at his club one night he said "I've been nurturing the idea that you and I should be friends for quite a while now, what do you think?" I said sure, that would be excellent. I forgot to give him my number, but he called a mutual friend to get it, and then he called 3 days after.

Well now. First time we hung out, he said he's recovering from a nasty breakup 2 months ago with a really crazy girl, and that it's going to take a while. I said I understand, and we've been hanging out as friends - no dinner & movies or anything like that, and it really isn't my thing either. First two-three weeks we met once a week and texted/called every other day, and now we meet twice a week or so, and text/call every day.

He's VERY interested in everything about me: how I was when I was a kid, what are my parents like, what do I value, what do I think about this and that. I mean, more than just generally interested. He asked me for recommendations on books (he knows I read a lot) and he's actually reading the book I recommended and talks about details in it. He notices little things, like a very slight limp I had the other day, and he's always worried if I'm cold. When I had the flu he texted me at 4am (he works at a club, remember) to tell me to get well soon. He also texts me a lot for no particular reason, like "are you working?" "I'm at the dentist, what are you doing? hugs, K"

So obviously he likes me. However, I don't know if he's attracted to me at all. He sits close when he talks to me and hugs me tight when we meet and part, but that's about it. He has lots of plans on what we should do together, like different museums and parks we must visit, and I also get the feeling that he's expecting me to invite him to my place. But if he's into me, I want him to invite me first. Silly perhaps, but I'd prefer it that way. And even if he wants to take it slow because of Crazy Ex, I'd like to know if he has any feelings for me at all besides friendly feelings.

I know he has several close female friends, and he has been best friends with girls for years and years, so that doesn't make it easier to decide what he's up to. I've been close friends with guys for years and years too. But I'm developing a crush on this one, and I'm beginning to feel a little confused here.

Opinions? How slow is "slow" for recovery from breakups, and how friendly can "friends" be?