Don't confront her until you KNOW. If she isn't talking to OM then it'll just seem controlling.
Is the third party a friend of W or OM? If so, I wouldn't believe it for a second. OM could have planted that knowing it would get back to you and you'd quit paying attention.
I know Puppy has said this to you before, but CHEATERS LIE. Always remember that.
Hope4us
Me - 49, W 49 S22 & S18 Dday 9/4/07 W claims NC 4/7/08 8/29/09 - Divorce Busted. Lots to work through, but we're going to make it.