Does he fancy me or not?

My professor at uni was staring at my face when he thought I wasn’t looking (I was typing something on my phone) as soon as I looked up at him, he looked away really quickly, he then did the same thing (was staring at my face and then quickly looking away). He wasn’t day dreaming, because he looked like he was completely aware of what he was doing and he was having a conversation with another student whilst he was staring at me. Strangely, he also lives near me, and he accepted my friend request on Facebook but he also has quite a lot of other students on there too. I don’t know if he fancies me exactly but he seems a bit curious about me! There’s been times where he’s poked fun at me before and doesn’t really do that with other students. But he’s quite a lot older than me, he’s in his 40’s.

Does he fancy me or not?
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