Look, we all know Roman talks in his sleep. It's canon, DWIT, It's old news, whatever.
This, now this is a man who sleepwalks. Not like "oh haha I woke up outside haha silly me haha XD" No.
This man wakes up and he's in Janus' bed. When did he get there? How? Nobody knows. All they know is he went to sleep in his own room, and woke up in someone elses.
Half the reason Virgil left was because he'd wake up with mister Cling-Wrap over here suctioned to his side at like 4am.
Janus has tried many methods to stop it, it never works. Remus has no issues with being treated like a damn werewolf on a full moon, chained down, locked up, the whole nine yards, he doesn't care. He likes it, even, claims he sleeps better that way.
It never works. Not. Once. Janus has even locked his own damn door, put a fucking bookshelf infront of it. Didn't work, he woke up, and stinky boy was right there, dead asleep, wrapped around him.
Janus even once conjured a snake to watch over Remus the whole night, because he was convinced Remus was doing this on purpose, because there was just no way he got himself out of all of that in his sleep.
He was, in fact, solidy asleep, the whole time. Dead. Fucking. Asleep.
It's impossible, the shit he can go through just to cling to someone else. Batshit insane.
It wouldn't even be that bad, really, if he didn't snore so damn loud. Not to mention the screaming.
He reeks, but Janus, even Virgil, got accustomed to it after some time, but the snoring?? There's no sleeping through that. Borderline screaming. And then he actually does scream. A lot. Like so much. Every night, blood curdling screeching right into your ear. Every night.
Janus hasn't slept soundly in years and it's most of the reason he's so pissed at Virgil for leaving because at least then they alternated, because yeah, sleepwalking Remus kept a schedule.