blanket friend
Someone with whom one regularly shares a bed, along with a significant level of sexual intimacy and personal fondness.
"Hey, where's Jack?"
"Probably off somewhere with his new blanket friend."
"Probably off somewhere with his new blanket friend."
Blanket friend
A close platonic friend that provides a sense of security and warmth. A comfy person to be around. Used in a non-romantic and non-sexual way.
Mica is my blanket friend they make me feel better when tired or depressed. They are comfort and security.