I'm not comfortable with it either.

I was with my first Owner for almost 2 years when he decided to bring another girl home. I tried to be ok with it, but as things changed, I began to feel excluded, jealous, and very insecure; it ended up being the catalyst that ended that relationship.

My Master now has made it clear that will just be me. So I can be secure that I won't be confronted with a similar situation with him.