What does he want?

I've been friends with this guy for about 13 years. We've known each other since college and kept in semi regular touch. We've made out before as drunk teenagers but nothing other than that has happened.

I haven't seen him for five years and only spoken to him occasionally in that time, when about 8 weeks ago we started texting. He's going through a really hard time at the moment and is not in the best place. He came over to my house, we watched tv and drank wine and he stayed for a few hours and then left. We were supposed to meet for a drink about 10 days ago but he bailed. It was at this point he told me what was going on with him personally (he's not seeing anyone else or anything like that but he has some pretty serious family issues going on currently)

Last week he texted me to ask if he could come over, he'd had a horrible day and needed to get out of the house. I said yes, he came over and we talked and then we made out and almost had sex, he stopped before we got to that point because he said he didn't want this (me and him) to just be about sex.

Our texts are flirty and intimate and have been getting more and more so over the past few days. We arranged for him to come over last night, which he did. We talked for a few hours, cuddled up on the sofa whilst holding hands and we made out. We moved to my bedroom and had a lot of foreplay but didn't have sex. After the foreplay he seemed quiet and a bit closed off. He left a few hours later. I put this down to him working all day and it was past midnight when he left. I thought he was tired.

We hug and hold hands and kiss but I always text him first. Sometimes he replies straight away and sometimes it's six hours later.

I like him and I would be in a relationship with him but I don't know how he feels about me. I don't know what he wants. Admittedly we're not close friends but I have known him since my teens and I don't want to lose that connection. What do I do?