need advice.

Just recently started talking to this guy online. We didn't mean on a dating app. We met on a social app type thing. He lives in the U.K., as where I'm in the US. Everything was great, then I got upset a couple of times over small stuff and ever since he's been super distant. He barely will message me. He hasn't even called/video chatted me in days and when I ask him to he doesn't. I've asked him to tell me if he doesn't like me anymore and he says he does. 
I'm really confused. I know there's something going on. He just won't tell me. Should I just stop talking to him? Or just give him space? I feel so annoying..