One door closes, another opens generally means there is still hope inside the person that he/she will find a relationship/opportunity/etc. That works out for him/her.
The 2.5 year relationship had the door close on it. It sounds as though he is enjoying being with you and is working on opening the door to a new relationship. Don't try pull it open for him.
I will caution you that he is still fresh out of a relationship and you have not been dating for very long. It is still too early to know what emotions are there other than maybe friendship. Let the relationship develop naturally and don't try to read meaning into every word. IF you are confused about something he says, ask him for clarification. After all, HE is the only one who can explain what he thinks, feels and means.
Enjoy getting to know each other.