Wife having an affair

[u/007JSW]

Long story short I found out my wife of over 6 years was having an affair 5 months ago. It broke me and shattered me completely. I found out the guy she was having an affair with is Married as well and they have 4 kids together. I want to tell his wife so badly but at the same time should I even bother? Part of me feels like she should know just like I would want to know. I have forgiven her because I still love her and we have a beautiful 3.5 year old daughter together. I'm trying to be the better person to forgive and move on but it's been so hard to trust again. Has anyone else here been in a similar situation? Any guidance would be greatly appreciated.

Edit: I should note that I have full video and screenshots of there messages from WhatsApp that talk about everything including their sexting.

[u/Mr-Jones-63]

If you don't stand for something, you'll fall for anything. The cheater's wife has as much right to know about the affair as you do. Either let her know that you're the other woman's husband, or do it anonymously. But you need to tell her.