That's how it should be.
To this day, I still feel like I stepped into a scene from the twilight zone when I came into my parent's apartment (they had a large house where nearly every inch was rented to someone with the exception, of course, where we lived) and there was my brother and his horse-faced gf sitting at my mother's kitchen table. She was wearing my brother's boxers and one of his T'shirts and my mother was making them breakfast.
I was like WTF?!?!
My brother was a grown man who had the entire upstairs to himself, separate entrance and all so what the HELL he was thinking and the girl? Did she have NO SHAME?!!?! What, he couldn't take her out for breakfast?