If I was in the place of the main character, I would have made sure to make a recording of it. She would have proof that she was the one who got cheated one, that he got the side-woman pregnant, that the said woman cheated on her own boyfriend too and cherry on top a recording of him accusing the executive manager of basically harassing her to push her to quit. Then play the recording at the end of the wedding, when it's too late for them to do anything. Thus get revenge by forcing them to stay married despite everyone knowing the dirty story behind their weddind and, if the story about the harrasment is true, prepare a lawsuit against the manager. This last part would need a little more proofs however.
If I was in the place of the main character, I would have made sure to make a recording of it. She would have proof that she was the one who got cheated one, that he got the side-woman pregnant, that the said woman cheated on her own boyfriend too and cherry on top a recording of him accusing the executive manager of basically harassing her to push her to quit. Then play the recording at the end of the wedding, when it's too late for them to do anything. Thus get revenge by forcing them to stay married despite everyone knowing the dirty story behind their weddind and, if the story about the harrasment is true, prepare a lawsuit against the manager. This last part would need a little more proofs however.