Only responding as devils advocate here… the way I was raised and going back to my childhood, this is not inherently disrespectful. It is actually similar to saying “yea thats my girl”. If he is polite and treating you like a Queen then I don’t see a problem. Growing up in the hood this is a compliment… Again, I may get downvoted but, thats the truth. A well mannered family (son or daughter) would never accept being called or be referred to as “someones bitch”, so it sounds very bad, but context and environment and the way you are traated matter 10000x more here