<human>: Can you succinctly summarize the text in 1-3 sentences?

I recently told boyfriend (21M) with trust issues about me cheating on my ex (23M).

My current boyfriend and I have been completely honest with each other from the start. And from the beginning he told me that his biggest fear was being cheated on, which is completely understandable.

I knew that I should tell him that I cheated on my ex boyfriend [BACKGROUND] because he felt so strongly about cheating but instead I decided that it was okay not to because that was in the past and I didn't even know my current boyfriend when I did that. And I am never doing that again, it destroyed me [shit hit the fan].

Well I just told him because he did deserve to know. And he was really upset. He said he felt like I cheated on him and that I lied to and misled him from the beginning because I kept the fact that I had cheated on my ex from him.

It brought up a lot of really bad feelings for me. And we're going to try to work through it. Together. I'm trying not to be difficult about it but I don't feel like I deserve him. Even though I did not cheat on him. I know he wouldn't be with me if I had told him about my past in the beginning.

A little part of me wishes I didn't tell him because I know I will be forever faithful. No matter who I date. Cheating is terrible, very terrible. And this guy is particularly special to me. 

Opinions, comments, and questions appreciated and needed.
<bot>: Told my boyfriend, who's biggest fear is being cheated on, that I cheated on my ex boyfriend. Need advice for giving him peace of mind.