Do you guys also think your LO is flirting when they probably aren't?

It's my professor and we've become quite close (close enough that he remembers my name and I'm casual with him). But the other day, during the lecture, it felt as if he was looking at me the whole time. My expression was unchanging, and our eye-contact was locked in for a good 5 minutes if not more. When I realised my expression was a bit too stone-faced, and that I shouldn't be staring into his soul, I looked away, and every time we made eye-contact again one of us would look away.

Maybe I'm delusional and it's all in my head, but... maybe he likes me back...? God, he's so out of my league, and he's much older, he'd never like me. I thought I was over him for sure this time. Off topic but last night he was in my dream and I woke up with a jolt when I saw him in there. As I got up to refill my water-bottle in the middle of the night, I said to myself "damn it I love him".

Have you guys ever had a moment where you thought your LO actually liked you, or thought about you romantically? Did you take these moments and replay them, convincing yourself that they feel the same way?