So, backstory is: married 12 years, two children, we have always been a stable, solid couple. Had a bit of a blip last year where we'd drifted a bit, just general life stuff, I was feeling taken for granted etc etc but we managed to have a good conversation about it and we have been, as far as I'm concerned, back on track.
I have discovered that a couple of weeks ago my husband appears to have downloaded a 'hookup' dating app on his phone. I didn't discover this by any type of snooping, we all have Apple phones and the apple family set up, so in the App Store on my phone I can see what apps he's downloaded, as it enables you to download apps others in the family have paid for. And this one is on his list, as you can see it was downloaded on the 11th Feb.
How would you approach/start this conversation with him? We are not an argumentative couple, we genuinely don't fight. I'm probably quite passive in that I let a lot of stuff go, but I don't believe in picking fights over the little things.
I have no evidence that he's actually done anything, he goes out maybe once every couple of weeks to the local pubs with his mate, but other than that he's generally either at work or at home. Our sex life dwindled a bit after having our second child, she's still young and doesn't sleep great, but we have been making more effort since our conversation before Christmas and he's not going without.
I just don't know how to have this talk... any help?