Based on what you have said. It sounds like you both have a miscommunication of relationship expectations. Him leaving his stuff with you was a show that on some level he wanted a commitment. But his words outwardly said that he didn't. I would take that as a sign that he is not sure what he wants. Or that he wants to still play the field while being in a relationship. Either way I would not jump so quickly either because it sounds like he his jumping out of one relationship to another. If you are both not ready for a commitment then you should treated just like that. Don't allow him to have commitment privileges if he is not ready to make the sacrifice. Don't ever feel like you have to walk on eggshells with him. You have more power than what you are giving yourself credit for. If he really wants to get to know you better than he will definitely do what he needs to do to make that happen. If he doesn't then I think that you have gotten your answer. If he calls you let him know that you are interested by answering his call and use feeling words when you tell him how you feel without accusing him. (i.e. "I'm happy to hear from you!" "I don't feel good about where this is going and what can we do so that we will both be happy.") Its OK to date others as long as your are not in a commitment and he made it very clear that you weren't. Hope this helps and good luck!