So: It's claimed that you abused someone, and then you give them a near-death experience. What do you think will happen? All their friends, family, and teachers who trusted them will turn their backs on you, and you'll obviously be the bad guy. Also, the guy who cheated on the main character with her was much more athletic, so it wouldn't have been easy to beat him up with a skinny body. From your perspective, the main character would have lost all sympathy because ALL the evidence points against him. While there was only an allegation before, now there would be proof plus the allegation