I've been with my bf almost 7 years. We don't live together despite him promising we would , every time it seemed like it should happen there would be reasons as to why he can't. So I live alone with my 2 kids 19 year old autistic son and 16 year old daughter neither are his children. I've always had a passion for dogs and recently felt so lonely as I only see him once a week that I thought more about getting a dog for protection and company. My sister offered to have the dog if we ever went away to which I thought would be great. He has breathing issues around dogs not all dogs though. Anyway I put it to him and he got very angry saying it would ruin our lives and stop us from doing things. He says I'm being very selfish and expecting to much .I feel very upset that I can't do this and have his blessing . Am I selfish ?