You're an adult, and this is entirely your decision. If you want opinions, though, I think you're better off not pursuing this. Sex shouldn't feel like something you have to do even though you're not really comfortable with it. Wait until you have somebody that you know well, and it will be much better for you.
I just think if you want is an actual relationship, this won't really help very much. You might feel really good for about two weeks knowing that you find an attractive lady to sleep with you, but that will wear off when you realize you're still single. If what you want is a relationship, then I wonder why you haven't put the same effort into getting a date that you've put into getting sex? I'm sure if you put months into legitimate dating sites, you would have gotten at least a date by now. Seeing as you haven't even done that, I think you're giving up too soon.
“This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.” ― Douglas Adams, The Hitchhiker's Guide to the Galaxy