What was the context of the conversation in which he admitted it was premeditated? If this conversation was online, or by text, it's a good idea to save that message, even if you don't want to file charges right now (I personally think you should go straight to the police, but I also understand that that may cause extra stress that you don't need right now). But it would be good to have this confession of his for later. I agree with others about cutting him off completely, right now, in every way possible. The guy sounds seriously dangerous, and any more communication with him could lead to another attack, or harassment or who knows what else. He sounds like he is not in touch with reality. You need to focus entirely on yourself right now and cut him out of the picture. Please contact a trauma center right away, or a rape hotline. The sooner you reach out for help to someone who is familiar with this sort of crime, the better. The longer you wait to tell people what happened, the more you will turn in on yourself, start to doubt yourself, and fall into the trap that many rape victims fall into - blaming themselves. Also, you have a right to be angry, to be very f*cking angry. Do not take it out on yourself. But it's not a bad idea to get a punching bag or sign up for martial arts classes. Just don't bottle your emotions up right now, that will make things harder in the long run.