What is the problem with my date?

I just had the weirdest/worst date ever. The guy and I met online, but we clicked instantly. We had so many things in common and we met the same night. When I met him I realized how sweet, soft and cute he sounded. He was very nice but also not quite ‘normal’. I felt that he didn’t like me because he was being physically distant and acting like he ‘has’ to be nice to me on a date I guess. We were more like friends than anything, but even after a while I didn’t have any sparks and I believe he didn’t either (?)

We went to my house because the weather was terrible and kind of chilled, he told me he was on anti-depressants and he has to take them all his life. He was all smiley and weird. It took him a while to make an actual move on me to kiss (which was pretty confusing to me, since prior to the move I thought he wanted to be just friends).

The bottom line is it was impossible to read this person and that made me feel uncomfortable. I couldn’t ask him anything serious because he seemed disinterested after I had told him that we lack connection. He even fell asleep instantly! Which kind of showed me how it didn’t bother him at all what I thought of us.

I’ve never experienced something where the person was so unreadable that it drove me insane. I don’t know what to make of it. Can’t tell if he did like me or he didn’t, but I wish there was a way to know. I don’t like to keep things a total mystery. Every time I wanted to speak about what he thinks I would stop because of the thought that he doesn’t want me to open my mouth since he thinks I’m just a silly girl. Was he a manic-depressive?

Soft-sounding, smiley, sweet, naive, insecure-ish, shy, etc. It was like I was on a date with a cute ghost! I also texted him but he didn’t reply.