Wow that is definitely a problem. In one case, it's good you told Chloe because she deserves to know if her boyfriend's screwing around on her but it's too bad Carson wasn't the one to do it (or was the one who wasn't man enough to tell her) since it's his responsibility if he chooses to fuck up. While Tori did something pretty bad and deceitful, so did Carson. They're both responsible for this and both should accept the consequences of their actions. They may 'hate you' for now but I think in your case their anger will blow over on you because you were just trying to help and make things right but in these situations sometimes there's no easy answer as to what the right thing to do is. It's probably going to take a few days but giving a chance for people to settle down and deal with the issue might be the best thing. If they want to talk to you about it then it's your decision if you want to get involved. They may all be your best friends but it isn't completely your problem so it's up to you if you want to intervene. Sometimes it's a good thing when you do and sometimes not so much so you'll have to assess the situation and see if it's something that will be good for you and all parties (or almost all parties) involved.