A serious cry for help

Okay what's the cry?
lets start with this...
since I started internship I had this doctor following me all the time, he used to make weird very sexual remarcks, and well I always dodged the ball being serious and being as far as him as posible, yet when he's kinda behaving decently we had great fun and a great time together as friends and colleages
But then he offered me a ride and I dumb me accepted, as a result we were talking and he finally had the guts to tell me he liked me since I was an intern and out of nowhere he kissed me, I'm still in shock...
the cry is here.. WHAT was I thinking to accept that?!
What shoud I do about that?
I think he's married!! FD's S I can't do this right now-.