Marcus Gunnarsen..

You had a boyfriend who always been toxic towards you and sou couldn't do anything about it. If sou wanted to break up with him he would threaten you
Marcus Gunnarsen moved in apartment next door with his friend Sebastian. Sebastian is your older brother.
Marcus wasn't usually in their apartment because of tours or either spends summer breaks at Trofors where his family lives.
His twin brother Martinus moved in apartment one floor above with his girlfriend Lola and Lola and you know each other from modeling agency.
One evening Marcus, Sebastian, Martinus and Lola were sitting in Marcus' apartment talking and drinking when they heard yells in apartment next door, your apartment, your boyfriend is yelling at you
Sebastian and Marcus exchanged knowing, worried looks and then looked down at their drinks