Belly inflation blurb: your significant other is a Dream Eater.
Lately you’ve been having bad dreams, and your significant other suggests laying your head on their belly when next you sleep together.
You wake up the next morning, finding you can barely remember your dreams, and find your significant others belly had swollen during the night, your head pillowed on its surface.
On eventually waking they reveal they don’t eat normal food, but instead thrive off dreams. They normally take snatches of peoples dreams by sending out their Dreamself to collect and munch on dreams, but they never really got the opportunity to glut like this. They thank you, even as they groan and have a hard time being painfully stuffed.
You resolve to sleep with your head on their stomach every night so they can eat good. You’ve been having good sleep ever since, and your significant other has been getting plumper and thicker.