I'm lying to my best friend what should I do
About 11 year ago before I really knew my best friend now,she was married to someone and I slept with him when I was drunk she knew he used to come to my house but I was friends with his friends so they often did,at the time I denied it it was meant to be kept between me and him but he told everyone anyhow somehow I got him to say he made it up when she was there,at the time I was a bit wild I was selfish and had no respect for myself,since then she has been divorced from him and is in a happy relaitionship with a child and during the past 5 year we have become really good friends,I want to tell her the truth as I hate lying but I'm scared it will ruin the friendship and she won't trust me anymore,its just that the past has a way of creeping up on you,am I best leaving the past where it is or should I tell her the truth,I've thought about writing her a letter.