You meet a great guy and sparks fly. Then you don’t hear from him for a bit, until—boom! Round two! Suddenly you’re in a pattern of hooking up regularly, and you like him enough to hope it means you’re dating. But infatuation and sexual attraction can play tricky mind games. Often, they convince us we’re dating someone who’s not dating us back. How to know the real deal? We asked some serial bachelors and a relationship expert to reveal the signs that you’re being kept at arm’s length. If your current honey exhibits these behaviors, realize it’s a fling—which is fine! Have fun, but when you want something serious, move on to someone with whom you have both chemistry and long-term potential.