"Commitment phobic" seems like another of those pseudo-psychology terms that just means that the guy wants to be able to "cat around" whenever he wants. If a guy can't commit, move on. Some guys will never commit unless they see a need. If you tell him that you need more and that you're planning to date other people, he might actually come around. If not, don't bluff, follow through and dump him. It's tough, but why wait for someone who may never commit?