No one has presented the obvious.
Wait until after the last class session of the year/semester/whatever then hop in bed with him, preferably after the final so you're not distracted. You can even proposition him with, "Now that that's over I need to unwind. Pork me."
No one in class will know, because they won't get together again for him to point you out in class and everyone else who was in the class (except you and him) will still think you're not slutty.