Found my 12 year old son looking at porn on his cell phone.

I know it’s normal for boys his age to look at that kind of stuff around this age, but where I need help is what to do from here. Do I acknowledge that I saw it on his phone ( he was grounded from his phone and I was checking through it, that’s how I know), he has already had the sex talk so not sure how to handle this? via /r/Parenting http://bit.ly/2VAMDqN