giving him the reputation of a sexual assaulter is not ok or legal. he should not have lied and that hurts OP but these things are dangerous. Please don't do that to another human being and falsely accuse. It also wouldn't be fair on people who have suffered assault. I am assuming by 'did something bad' you are referring to sexual assault

I am so sorry I misread your comment. I thought you wrote 'did' rather than 'said.' I take it back.

Does your campus have anyone you could talk to or register a complaint with? This is slander, and if people are actually treating you differently over this, it affects your education. Does your uni have counseling available through the school? If so, and if those services have a good rep (not all do), maybe talk to them about your experience, and see what they say. Perhaps they can make suggestions about how to deal with this through the school. That guy's behavior is gross and despicable. And if someone seriously asks you what happened, tell the truth: He hurt himself by accident, then afterwards told everyone you did it. You don't know why he did this, but it is presumably some flaw in his character, and you can say that. He's lied in a way that affects someone else's reputation, and he made that someone else's first, and aborted, sexual experience. Unless mad terrorists are holding his family hostage unless he tells everyone you bit his penis, it is obvious he has severe flaws in his character. He is inconsiderate. He was callous. He's probably cowardly and can't even admit he accidentally hurt himself. He is knowingly lying, and more than lying he is telling lies that are hurtful, and which could tarnish your reputation. He is dishonest, plus some combination of cowardly, cruel, and callous. Those are character flaws. So if you say he has lied about you, and clearly has some flaw in his character, you probably won't be slandering _him_. But I don't know what the atmosphere is at your university, or whether that sort of fight is one that won't be impossibly difficult for little reward. If nothing else, we can wish penis-leprosy on him, right?