dreaming or awake?

Okay so in January last month I had a "dream" that's went through my boyfriends phone and he had nudes of his mom on his phone. They were like crazy poses or anything it was just her in a towel on her head like she had just gotten out of the shower. I don't think she knew he took them either. I went to just ask him about it like 3 months after it happened (I don't like confrontation) and I just told him we needed to talk about something that I saw on his phone because it felt so real And I just wanted to talk to him about it. He got pissed because he thought I went through his phone so we never ended up actually talking about it. I've noticed that his mom and her whole side of that family (the women) are like totally in love with him and just thinks everything he says is hilarious. And I overthink about it and I'm like wow they all want his dick 😂 But I'm just wondering if it's too late to say anything now since it's been a year and it's always in the back of my head. I'm constantly wondering about it and if it's even anything I should be worried about. I mean she's married and that's her son would anything ever happen between them? I just wish I could forget about it but the way he freaked out about it idk? I asked one of my guy friends if he would be mad if his girlfriend went through his phone and he said yeah so idk if I'm just overthinking everything or what. And what should I say to him if you guys think I should?