Found out my mom is having an affair with my uncle + found her n*de$. Don’t know what to do.

For the past few weeks I noticed my mom and my uncle (her brother-in-law) talking on the phone and texting a lot every day. It felt unusual, so one day I checked her WhatsApp.

I found chats where my uncle was talking dirty about her body, specifically about her p*ssy. They were clearly having an affair.

Later I went through the recycle bin in her gallery and found nudes of her — pictures of her boobs and pussy.

After seeing all that, I ended up masturb*ting to the photos. I feel conflicted about that part.

Now they mostly use WhatsApp and delete the chats regularly, so it’s hard for me to keep track of what’s going on.

I’ve been confused about what to do. At different points I thought about:

Confronting her

Telling my dad

Even darker ideas (which I now realize are stupid)

Right now I’ve decided to stay quiet and just observe, but I don’t know if that’s the right long-term decision.

I’m not sure what I want:

Do I keep this secret forever?

Do I eventually tell my dad?

Do I confront my mom privately?

Or just try to move on and ignore it?

Has anyone been in a similar situation?

What would you do if you found out your mom was cheating with a relative and you also found her private photos?

I DON'T KNOW HOW I CAN READ THEIR CHATS.

Any honest advice is appreciated.