So I am a gay 23F who has been in a relationship for the last 2.5 years. This last year I have struggled with a low libido to the point we have only had sex once every few months. I went onto my partners phone and noticed a few girls sc and decided to read one of them, in turn found some flirty/dirty messages. The girl is also from a completely different country. I only read one chat. I also seen a chat with a guy on insta that has again sexual messages which later transferred to sc. I just don’t know what to do, I feel like its my fault, but I know it shouldn’t. I am also in the wrong going through the phone

We are engaged, have a house, and two dogs together - great family relations on both sides.