Two things, SoTorn:

1 - W says there is neither EA nor PA. I believe her. Her family members, our mutual friends, and our kids affirm this.

2 - I know I am in the minority here, but to me, the betrayal in an A is not the act but in dishonesty. Monogamy strikes me increasingly as a social contract running counter to biology. I know happy couples who have it within them to operate within nonexclusive physical relationships. Seems more common among the younger people I know. All depends on the terms of each couple's agreement.