Strange weekend

After dreading the three day weekend, by stbx asked to spend some time with me, he ended up coming over Friday night and staying till sunday. Very cuddly, very nice and happy. We had a good time. Of course no sex, that hasn't been on the table for a looonnnng time. So I have to ask him, what is this? What are we doing? He says why question it, just have a good day.
I ask are we a couple, he says he doesn't know. Can I see other people? I 'm so confused, it was the best couple days we've had so I didn't want to ask to many questions. But I really will have to think hard if I can be happy in a sexless marriage again. Maybe I can, I just have to change my perspective.
I know this sounds weird, but I wish he'd meet some really hot girl that was really into him and maybe help him get over this weird psychological rut he's gotten into. I really don't think he turned asexual over the last couple years. I thinks its in his head, and maybe some girl could bring that back for him.