Hfound some stuff in my husband phone

Yesterday while my husband was taking a shower I snooped through his phone(I know it’s not even a good sign when u are doing that) but I found he had blocked messages if you have an android you know that when u block a number and that blocked number tries to text you they go to this blocked messages so I say he had a couple of these blocked messages from some number that’s said” I’m available” and “are you there” so I googled the number and it was to some I don’t know what you call these girls prostitutes sex workers whatever and her name popped up and fotos so as you can see I was so disappointed and sad bc we are TTC this is why I got this app but I didn’t confront him yet bc we been through a lot already that in a way I’m numb to all this.. what should I do should I tell him I was snooping through his phone and saw what I saw? Should I keep it to myself I just don’t know