Most Helpful Guy
it sounds to me like he is not over his ex really...or more he is not fully over the pain of the last relationship. he likes you clearly but isn't fully invested in a relationship as his heart and mind are still pained from the last one. I think the problem for him is that a part of him knows you are a good person for him, he likes you, is attracted to you, etc but another part of him probably has fear and trepidation about getting into another relationship.
i think for your sake you need to really have a thorough converastion. you need to find out, and verify for yourself if he seems ready for a relationship (not just what he says, but how he says it, his body language).
I've been in heartbreaking relationships and even months after they ended, while I didn't want to be alone and knew that I was done with my ex, my heart still felt the pain of the relationship and so I knew I wasn't really ready or prepared to give myself to someone else.
on your end you've got to protect yourself from being hurt by a guy who may not be ready for a relationship, so proceed with caution