I just found out that my mom is cheating on my dad. What should I do?

[Cindy]

Don't listen to these people telling you to talk to your mom. Your dad needs to see this evidence for himself. Tell your sister about what you found, then get together and tell your dad when your mom is gone. Tell him exactly how this makes you feel and that you're telling him this because he deserves better than this. Make him feel important and loved. Tell your dad to confront your mom when she gets home and make him show your mom what "he" found. Make sure your dad tells her he found this alone and not to bring you and your sister into this mess. Good luck