history: My father cheated on my mother. I was not happy with him at all. So i found out my dad was cheating on my mom for 3 years. Oh no_comma_ I am so sorry to hear that. Does your mom know?
current: Yeah she is the one that told me. Apparently she managed to make him break it off finally.
next: I am so sorry that your family is going through this horrible time. Is your dad unwilling to end the affair?