[ItWasJustBanter]

Brian started most of the arguments between them.

He's not able to take criticism in the same way they are and so when there was a disagreement he would fly off the handle. then he'd retreat for a few hours and run things over in his mind, convincing himself of stuff he believed to be correct but which actually wasn't true.

He is a very unstable character. A few housemates will sleep safer tonight.