I inadvertently came upon some information and waited to see if my boyfriend would tell me on his own or not.

He did not. And when I asked him directly (not revealing that I knew the truth) he lied to me.

Now I’m unsure how to proceed forward. What’s difficult is this isn’t even a big deal or something that I feel like he should lie about?? And I’m not the type of person who gets mad and blows up about things anyway- which he knows. He also knows how much I value honesty. So I feel very hurt and confused about this and I’m not sure if or how I should tell him that I know the truth?

I don’t want to come across as accusatory, but I also don’t want him to think that I’m just naive / he can get away with lying to me?

What is a graceful way to approach this situation that will allow him to explain himself and not feel attacked?