You have a very toxic relationship with your boyfriend and it's just repeated situation....a lot of abuse and hitting and also insults....

Taehyung has bad relationship with his girlfriend as well,he just realized his girlfriend is a gold digger and she don't want him but his money and status which made him sad. He truly loves her but she just love him for his money and they fight everyday and as always, his girlfriend manipulate him and gets whatever she wants from him

That night,you had a huge argument with your boyfriend and in anger...he started to throw things at you and hitting you and you just walked out of the house with bruises on your cheeks and a cut on your forehead which leads to bleeding....you just fed up with everything and while you were walking....you spotted someone in the bus stop and it was Taehyung....he was sitting at the bus stop bench and looking down while sobbing and he looks sad too...as if he is giving up on something