Friends with benefits

So, generally I am a relationship girl. But I have been having terrible luck. I just got into a friends with benefits kind of relationship and I can’t stop feeling like a slut. For those of you who have done this, how do you rationalize it? The sex is so good. But we’ll never be more than friends. His decision not mine. I am worried I might end up hurt in the long run. Is this stupid? Please be nice

I must add that I have no feelings for him. The sex is just awesome. I worry feelings might develop hough.