<human>: I'm graduating this semester and want to have sex with my lecturer once I'm no longer a student. I am not interested in a romantic relationship with him. I have no delusions about being intellectual or life stage equals. I just want to bone.

As someone who will not be a student, he will never serve on any advisory boards related to me, and I will never ask him for a recommendation or any other academic or career favors.

Our relationship currently is very professional. This is a bit of a problem because I have no idea if he treats me favorably because he a) likes me as a person, b) likes that I am an excellent student, c) is sexually attracted to me. I have the sense that he does find me attractive. As it is with my peers, the sense comes from not any specific event but an accumulation of them and probably some subconscious cherry picking. However, I have had a crush on a professor in the past and could tell that he was not at all interested in me so I feel somewhat confident about this venture. But I'd hate to embarrass myself so terrifically like this. On top of the proposition feeling a little taboo, rejection would be such an emotional wrench. 

There are no policies that guide relationships between instructors and former students. I don't want this to be a prolonged liaison and if we were to get in bed (or on the floor or, you know, everywhere), like every other person in this position, I don't plan on this information every coming out. But I do have some reservations because there's always a risk, right? I have a stellar GPA and would hate employers to suspect that I have slept my way to distinction (I could not care less if a non-employer believed I traded sex for grades). And I worry that people will think my instructor is some sort of lech or that he'll be known as the hot professor that is willing to bone former students. 

Maybe it all doesn't matter since we're both adults with no academic ties (soon).
  
So do you guys think I should go for it? And if so, how should I approach him?

Can you condense the text into a few key points?
<bot>: I want to bang my lecturer after I graduate but don't know if he's interested and don't know if this is unethical or a bad idea in general.