I think my dad is cheating my mum. Last year I remember seeing some emails in his deleted box saying stuff like

Hey, wanna get naughty tonight? Check out my profile for some sexy pics.

There were at least 15 emails.

I was too scared to do or say anything about it.

Today someone called my dad. I had a glimpse at the number and it's no one I know. He told whoever it was that he was busy at the moment which I found really suspicious.

Is he cheating? What should I do?