What is this guy doing? Explain this behavior?

1. He complimented me, while listing a hesitation due to a factor neither of us can control

2. He pops in and out randomly. I am busy and don't really think about it, but he popped up again, and I might as well ask.

3. He's clearly into me physically... and then also mentioned wanting to get to know me. And then disappeared again.

It seems to me he's feeling it out, due to the initial hesitation, but I am not a guy, so share your thoughts.

4. This is an online dating situation.

5. Let me know if you want detail.

What is this guy doing? Explain this behavior?
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