Men: Should I propose a sex-only fling?

Hi, I really need a man’s honest opinion on how I should handle my problem. I am a 29 year old female, (I’m attached). 2 months ago I was laid off from a job where I worked with a 40 something male, (he’s attached). I cannot explain it, but I am/was soo sexually attracted to him, I do not understand it. He seemed to be to me, at times, but he mostly just seemed to be checking me out but would look away if I saw him. Sometimes he would stare directly into my eyes, or raise his eyebrows and he strongly gave off a vibe that felt very strong and very sexual. Here’s the question-(I KNOW, I am immoral and wrong, and whatever other names for bad girls there are, ) BUT, I want to have a no strings at all, SEXUAL ONLY, discreet encounter with this man-at least one time. I just want to know what it’s like. My question, should I, somehow, let him know this? I have never made a first move, let alone to say Hey, married guy-how bout a one nighter? How would the avg. 40 something man feel about a girl wanting this? I don’t want to offend, and am terrified of rejection-please advise. ASAP. Thanks so much!