For context, I know I'm relatively young, and some people may not take my issues seriously, but I really need some advice.
It's my senior year of high school, and I have around 5-6 weeks of classes left. This is the time to really take advantage of the time I have left with the people I care about before college, but how can I do that if the most important people in my life hate each other and can't be together without it getting weird?
It all started when my best friend and I had an argument last winter that got a bit heated and mean, and she made some unnecessary digs at me. My boyfriend really didn't appreciate how she treated me, and apparently, she could tell he was upset with her. This upset her because, in her mind, the things that happen between the two of us do not concern my boyfriend or hers, so the fact that she could tell he was quite bothered by this really pissed her off. Mind you, she and I have talked about the situation since then, and I've gained a better perspective on why she reacted the way she did, and I've realized my wrongdoings as well. We're fine now, but my boyfriend never really got over it. That and other things he doesn't appreciate about her behavior–things I'm used to and don't really care about because she's my best friend.
So he's upset with her all the time because of these things, and she's upset with him because she knows that he doesn't like her based on how he acts, and she doesn't think he has a reason not to like her. In fact, she has told me she lost respect for him because he acts weird and fake with her, yet doesn't do anything about it or confront her. She has a very strong personality, and he has a less confrontational personality, so I think they also differ a lot in that way.
This is a very general description of the situation without a lot of details because it's a lot to fully unpack, but I really need help on what to do. It doesn't seem they're ever going to actually get along. They both think the same things of each other, which also makes it harder trying to be a messenger between them when they both think they're completely right, even though I think the situation is more nuanced than that. I want them to talk, but even then, I don't know if that'll do anything. It truly hurts me really bad to be in the middle of all of this. What do you recommend I do, or should I just suck up and deal?
tl;dr – The two people I care about most can't stand each other, and it might ruin my senior year.