Cash puts it on such an ugly basis. Do you want sex to be a transaction, even if it would be a great purchase? Did you read the one about the guy's first experience with another guy? They pressed their bodies together briefly, but it was hotter than lava.
I'm not going to tell you what to do, because in your situation, I would want the freedom to do whatever the hell I want. There is not a wrong answer, just choices. If you ask me, though, you sound like such a nice guy. I think you deserve a little better, like not to be used, to be loved.
If love is not what you are looking for this time around, by all means, go for it.