<human>: Could you distill the essence of the text into 1-3 sentences?

First off I would like to let you all know that I have spoken to a professional about this and my therapist believes I'm ready to begin seriously dating again. I did have some issues because of this mostly trust issues and embarrassment for falling for someone like him and not seeing something was wrong. 

My ex [26/m] of just over a year got caught with child porn on his computer. It was a complete shock to everyone that knew him and I found out that he had lied to me about his past. He told me he was on parole for possession of weed, which to me wasn't a big deal people make mistakes and he had stopped smoking so I decided to give him a shot. He was really on parole for have sexual contact with a minor when he was 20 I believe the girl in question was 14 at the time. I never thought to google him or question his story because I trusted him. He is the best liar and manipulator I have ever met in my entire life, he had me, his friends, his coworkers, my friends and my family convinced he was a great guy. 

Is this something I should share with my next SO or should I just keep it to myself? If I should tell them how and when should I do it? After a couple of weeks, months in or longer?
<bot>: Ex was a sex offender and I didn't know till he got arrested with child porn. If I should tell future SO's when and how should I do it?