Thanks everyone for your helpful, honest advice and support. Usually in our relationship the communication is good, and he has expressed that he likes that part of what we have. But I see where I can go wrong, and that is the fact that I should not be afraid to hold back, while still being supportive. I brought up some of my feelings to him, while still showing support for whatever it is would make him happy, and I felt heard, so hopefully that will continue. He admitted that sometimes he makes decisions without thinking them through or doing enough research, so I am also hoping he will make a decision in the best interest of the animal. It sounds to me though that he has come to the conclusion that a pet would not be conducive to his lifestyle right now (not just involving our relationship.... but other aspects of his life). Maybe in the future it will be.