Manga by author Lee Aru - Status ongoing

Dowan starts living with Chamin, the object of his unrequited love. One night, Chamin goes into Dowan's room with a different look in his eyes and starts demanding for sex. But it's just all because of a condition called "sexsomnia"? So whenever Dowan looks at Chamin who can't remember the steamy nights they've shared together, his chest hurts

Unfortunately, Lezhin didn't release the 4th story, No Need to Talk by Tto Mi.