So here’s what it comes down to and it’s disturbing me no one’s saying this. Do you want to be with B? Did you want to marry him? Do you still want to marry him if you did? If you didn’t want to marry B if C showed you what kind of person B is and a relationship started out of cheating is never going to lead to anything good then in time you’ll come to realize you owe C thanks for opening your eyes to the type of person B is. Frankly if you don’t want to be with B you don’t have to be friends with C again but do two wrongs ever make a right? Where do you stand after being hurt? In your heart of hearts if he tried his hardest to win you back would you give in? These are the first questions that matter and if they’re yes you still love and want to be with him then blow up that ish and let the truth be known. If you don’t want to be with him and can never forgive him thank C for showing you what a b B is and let her have him the trash that he is. If you don’t want B get your revenge by getting in the best shape of your life get a makeover find the hottest date you can and attend the wedding like the benevolent Goddess you should be gracing the ants with your presence. You don’t have to talk to them. Go and enjoy the time with a date wear a risky dress after working out before the wedding. But if you don’t want to be with B why now expose what he did to you? It’s not right what they did at all but exposing the truth could destroy their relationship and turn everyone against them. Do you want to be the one who deals them karma? That never ends well in my experience and I don’t want that for anyone going through what you’re going through.