Just, I agree about not telling; but it is hard because I do not like the woman or the guy; but she does not deserve this cheating even if it means telling on my X who I care for.

But I also know it isn't good for me to do so, so I don't...

THe hard part is carrying the knowledge around and not being able to let it out. The wondering if it will all end and maybe she does still care...It's the time that kills me and I know it is necessary; but it doesn't make it any easier :-(