Ok, so back story is I knew a guy from years ago (15 or so years ago). When I say I knew I mean he was an acquaintance really, a nice guy, I always said hi to him and we would joke around but nothing more.
At the end of last year I went on a rare night out with a female friend and this guy just so happened to be there. He cane over and asked if I remembered him etc. We ended up catching up with each other over the course of the night as we haven't seen each other since about 15 years ago.
We added each other on social media, we ended up messaging a lot. Ten he asked me out for a drink. I went. He ended up back at mine although nothing happened, we just ate pizza and we both fell asleep (honest truth!!). We arranged to go out again and we did do. That was before Xmas. The it died down. The messaging between us both got more and more scarce.
For clarification we're both generally busy people in different ways. I wasn't too bothered about the lack of contact.
Then he got back in touch again earlier this year. I invited him to the pub as I was already out some people. This was in March. After that he's mentioned getting pizza with me again and watching crappy movies with me. He's mentioned it a few times now.
He recently told me he had a gig coming up (he plays in a band, the gig was last night). So I went along to watch his band with some friends. After his set he spent the rest of the night talking to me or by my side. At a few points he put his arm around my waist but only to talk to me closely as there were other bands playing and it was fairly loud.
My other mates all left the venue to go on to a night club, I was tired so wanted to head home. After my friends all left, this guy stayed talking to me for ages. When I said I was tired he asked if I'd like him to walk me to a taxi place to which I said yes.
As we left the venue and were walking down the street he held my hand. We ended up down a side street and he said he wanted to kiss me. I stupidly asked him what his motive was and I think I killed any 'moment' there and then even though I was joking. Instead we hugged for what seemed like ages 
then he walked me to my taxi, I got in and we said our goodbyes.
I messaged him when I got home to say I'd had a good night etc and he said jokingly 'what's your address, I'll come over if you like?' I jokingly said I couldn't be bothered moving now I'm in bed.
We've been messaging again all day.
I'm not sure I can weigh him up. Is it just sex he wants or more? It's hard to tell as he's very light hearted and is always joking around etc.
Sorry this is long winded. I I'd tell him a while back that I'd prefer to stay single for a long while as I got out of a bad relationship last year and it was painful and messy (I have kids too). He also said single is good for him too and was very laid back about the whole thing.
Sorry this was so long. And possibly outing. What do you think?