I imagine you're with me that you lye beside me and going to bed isn't boring or lonely or inevitable but warm and fulfilling. I imagine I go to sleep with the knowledge that someone loves me.
It could be a pillow I hold close and burrow my face into as if I am gently kissing your neck, the heat of my own body could be yours beside me.
When you're lonely the mind can step up and over compensate. When you're terribly lonely and unsure of the prospect of love ever happening, you'll believe anything.