Sharing Our Innermost Thoughts

This is something I m holding up since a really long time but now it is taking a troll on my mental health very badly this is about my really really good friend or you can say bff but now it is being really toxic we all live together but she and her bf fights like all the fucking time verbal fight is ok but they get physical and hurt each other and even do self harm bang their head on the wall cry like someone have died and still they are together they fight and make up and everything becomes normal for them but it is becoming really toxic for me i m not able to study even when our exams were there they use to fight and my frnd than act normal and start studying and i m still in shock because of that i m feeling really messed up she is my bff but it is really toxic don’t know what to do