Having romantic feelings for a psychiatrist?

I have been feeling romantically about a psychiatrist I have been seeing and it’s been quite disturbing. He is like my dad’s age but I just feel like I am so attracted to him when I talk to him, even if that only means email communications. I have never met him in person because all of our consultations are online. He and I also work at the same university and I am so afraid to one day bumping into him. Moreover, after communicating with him, I just feel like happy for a little while and feel like even my symptoms improve (depression). I want to keep seeing him at the same frequency but don’t know how to bring up about it because I am afraid he might have already seen through it. What is the reason that’s causing this? Is there anything I can work on to improve this feeling?