<human>: Ugh. Throwaway because everyone's a redditor. Okay, well, I pride myself on being able to not post until now, which- to be fair- is an incredible example of self control on my part, imo. But alright, here we are. 

As of now, I have just walked away from my a massive fight between my roommate and her live-in bf which over 3 hours they were trying to get me into. I am extremely frustrated. Basically, it came down to her asking him to leave, and him refusing, and her saying that she felt unsafe with him there with him yelling (her own personal baggage) and him refusing to leave saying he had no where else to go. It's all fairly straightforward. But I ended up mediating because I started as roommate to my best female friend, and becoming friends with the both of them (not my ideal choice, and maybe I shouldn't have done it, but what's done is done). 

Over time, however, this excessive fighting has become too much. I am angry, and I am sad that I am so upset about all of this, but this is my house. My best friend rents from me, and her boyfriend (the live-in) has been here for about a year and a half. The shitty thing is that I work from home and can't get away, and do not wish to abandon this house, but I am starting to wonder if that isn't the wise choice given the circumstances. I am financially stable for the most part, but the two of them are in a state of financial difficulty. 

Pretty much, the way the evening ended was that he refused to leave, she barricaded herself in her room... and in this tiny house I am confided to the kitchen and/or my room. So, here I am reddit... asking what in the fuck I am supposed to do now. 

ALL opinions are helpful, even ones telling me I'm doing something wrong. Honestly, I'd love to hear any and all input on what to do next.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Roommates (a couple) are in the middle of WW3 and I don't know what I should do about it.