<human>: He broke off the relationship a year ago.  It was unexpected, and painful for both of us, but not ugly (no cheating, violence, etc).  Since then, he's made sporadic contact, but less and less.  Recently, he sent me a slightly(?) drunk email basically thanking me for the relationship.  I'm trying to decide if this is exactly what it appears to be, or if he's testing the water to see how I respond.  

On one hand, he's a very straightforward guy who doesn't play games, and he's a real lone-wolf sort, without many friends or close relationships, so he does get lonely.  Plus, the break-up was more because he didn't want to be in a relationship at all, rather than he just didn't want to be in a relationship with me.

On the other hand, he's the one who's contacting me.  If he wanted to keep that door shut, then why is he re-opening it?  It's been a year, he's unlikely to have had a new girlfriend since then, and he's probably lonely and horny.

I know that no one here is a mindreader, but I'm hoping that other people with no involvement in the situation can give me some objective perspectives.

Can you summarize the given text in a few sentences?
<bot>: Ex of a year contacts me.  Is a letter just a letter, or might it be a precursor to something more?