There is this super hot guy in my class and I really want to hook up with him ...
Why? It's going to be for one -- count it! ONE! -- night. So if it's good, you'll never have him again, and you probably will regret it. If it's bad, you'll probably regret it, too, because you've wasted your time and degraded your reputation. Either way, you lose.
The fact that he apparently advertises that he only does one-night stands indicates to me that he's a smug, shallow asshole. If you're one of those women who gets off on being treated like crap, then by all means go for it!