What I would do is,try to forget about it. Do something like,make some food,read,listen to música o play video games. Just,try not to think about it. Unless,you wanna confront what happened and admit that tu did it.
Admit to myself that I had made a mistake then I mover on with my life. It was a mistake, yes, but what más could I do to change that? not much. Everyone makes mistakes, just get over it and mover on with your life, no point on dwelling on it.