Advice Re: what I found in my bfs phone

My boyfriend was pretty hammered and I had this really weird feeling in the pit of my stomach to go through his phone (I KNOW.....I fucking went through his phone 🙍🏻‍♀️) I saw he messaged a girl I met through one of his really close guy friend (the friend and the girl dated back in the day) and I found this.

I need advice if wether I should say something? What would you do?