One question for you - did you sell the puppy to a good home? If the answer is yes - than you did the right thing. It was obviously the wrong time for you both to get a new puppy so by passing him onto a better home was the right thing to do.
I would also have an issue with a puppy in a unit. I just wouldn't like to raise a dog like that. I live on a farm and my dogs have acres to run around in and things to do all of the time. I know many people do it and all are happy - but it just not for me.
Wait until the time is right for both you and your partner and then start looking for a life-time friend. Don't knock yourself around about the little bloke now. I'm sure he is happy.