After your bunny girlfriend grew extremely tall, you had to move to a far larger place. Luckily the city paid for it as it is increasing tourism. This is when you realize that you can't reach anything on your own and need her to take care of you. She helps you get to food, tucks you in, gives you headpats and snuggles. Then you finally get sleepy and need to be tucked in, so she sings you gently to sleep.