ah....yes....I've been in a situation like this before. Sadly, mine cheated on me for another because of his fancy lifestyle, had finished education, and money in the future from a promising degree, And what did I have? Still young, a student, and was working part-time which would describe him 6 years ago. Really, after a while like 5 months, she's trying to get back in my life when I felt like I got stabbed in the chest, below my heart. And, did the same thing and I realized it would of have worth it if it was a one night stand like in your case.
So to answer you, all I have to say is, what do you got to lose in a one night stand. Go for it!