Why did he keep staring at me on FaceTime?

Okay so I’ve been talking to this guy out of state for a couple months now. We’ve never met in person and we mostly do only phone calls. We’ve FaceTimed once but it was at night and we could hardly see each other. So yesterday afternoon, he FaceTimed me, we talked a little bit and then I kept catching him just staring at me. Then I guess another call came in and he had to hang up. What does this mean? Did he admire what he saw or he was realizing that I’m not his type? I’m beginning to overthink. Help!
Why did he keep staring at me on FaceTime?
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