Thank you all so much for your feedback. To the person who said stop contacting him, I am not sure if you meant when he talks to me, but I would like to make it clear that since I found out he is taken I never comment or like anything on his page, and I haven't once reached out. This is all him initiating.

Also, I agree with the whole "this is why we can't be together," thing. It was about something super silly too so I am not sure if that is his way of playfully flirting, but it was a weird thing to say because it is like he has thought about it?