Essentially, if a guy wants a relationship, he knows from the start, and he goes after a relationship from the start. If he doesn't, he also knows that from the start, so if he's looking for a friends with benefits, that's all he wants, and that's all he's likely to ever want with you. The above post explains it in more detail.
Yeah, but I wish guys would see it that way. They complain about less sex in a relationship yet they don't acknowledge the good sex they get from a friend. They need to wife that or at least make it a committed thang. My two cents of course.