He wants to get a dog.
i don't see any way but one in which that could be construed.
I would say but I'm not a guy any more
It means he sees long term potential in you, and is trying to figure out how you feel about him.
OBVIASLY he want YOU!!!!
id have thought that was quite a natural thing to say, it means he wants to marry you and have a family
Means it wont end well.
It means that he's thinking about leaving for good.