Sending pictures

So last night I tried to go through my other half’s phone but I didn’t know his passcode but managed to see that he has tinder on there I found out his password and tonight I have been on there and Iv seen that he’s got deleted videos of his dick and him wanking and videos and pictures of girls. We have been together nearly 2 years and have a 7 month old daughter together we have a house together and I just not sure how to confront him about it. What would you do?

Before anyone starts he goes on my phone and he’s very secretive with his phone and that’s first time Iv ever been on it