I can almost guarantee any single person between the ages of 18 and 30 can relate to the following unspoken rules at least once. The rules of online dating have changed. Forget that stuff about playing hard to get, expecting the man to pay, and never having sex on a first date. I always tell my friends to stop going for the “bad boys,” or the now commonly used term, “f*ckboys, ”the “dogs” of the dating world. But for some.