Anal can kill you. Don't do anal, period. But especially don't let a man use you. If he offers anal as an excuse for why you should put out with him regardless your concerns, that's telltale that he's trash and is using you. Don't let yourself be used like that again.
I know what it's like to be used. Tell him he should be extremely lucky this isn't a barbaric and backwards Middle Eastern country, where they would have chopped off his dick by now and dipped the rest of him in nitric acid.
Also, tell him that he should be lucky his doesn't rot off. Make up some disease you are still a carrier of. See how he reacts.
Ignore Ignore Ignore. Any reaction from you will only satisfy him. Don't even try to go out of your way to prove yourself to anyone, just let it be and if people ask you personally, then just tell them casually that it didn't happen.
yes and unblock him because that in my opinion makes you look like he was trying to tell the truth and you are trying to hide. confront him about it and ask him nicely why. The thing is if you did do anal you can't really do anything but be mad at him so then go ahead and block him on everything. But if you didn't, be calm about it and ask him why. If you go ape s*** on him, some people will be scared of you or will be encouraging you. Or the 3rd option is just tell the school and get him in trouble for bullying. If your school is like mine they will believe you without any proof just because you are a girl and he is a guy and feminism has victimised women and they will believe you right away. If they aren't like that like my school then scratch that idea. I wish you luck.
I don't know the situation. Was he lying about it, or telling the truth? Either way, he sucks for telling anybody about that. I wouldn't talk to him if I was you.