Did I ruin it?

laiiid

Hey so my boyfriend and I have been together for 6 months now. A couple months later he went through my phone and found old pics & videos of me & my ex which I have no contact with. I absolutely felt horrible because I could of deleted that when I had the chance anyways a couple weeks ago I found out that he still has a phone plan with his ex and her family, I don’t see anything innocent about this. I felt betrayed that he didn’t feel the need to tell me even if there’s nothing going on like he claims. Today we had an argument and one thing led to another to where he started bringing stuff up to be more specific what he saw on my phone. He said that I ruined the good relationship we had. Did I ruin it ?