Would my married older man college staff member have an affair with me??

I go to college and over the past few weeks I have become very attracted to this advisor who is a member of staff and also is somewhat older than myself. I don't know what is it there is just something very sexy about him. He doesn't wear a wedding ring so I just recently found out he is married. If I am honest he hasn't done anything specifically that makes me think I am in there. All I can comment on is that when we had a meeting in his office the other day he kept sitting provocatively in front of me behind his desk. Like leaning his legs up on the drawers off his desk and showing me a full angle view off his crotch. I don't know if thats anything to go by but it was making me feel very hot and bothered. During the same meeting I also found myself licking my lips a lot, I am very turned on my him. Then when i walked into a meeting yesterday and I wasn't initially going to go his face looked very startled to see me and suprised. I also made sure I dressed to impress swell too though. So heres the thing, do i pursue this? If so how do i go about it. How do i subtly flirt with this man to find out if he would consider sleeping with me. I can;t just come out with it with me being a student. But I am a mature student, in my late 20's. Please give some advice if your a man and reading this.