looking for a manga :((

there’s this manga that i read where the main guy is gay but his best friend isn’t but his best friend has this illness (i guess ??) where he has sex in his sleep (he doesn’t realise who he’s fucking tho) . basically the straight guy has sex with the main character without knowing it’s his best friend and he continues to do so. i really wanna read it again so if anyone has any idea what this manga is i’ll really appreciate it if u reply