Saffie's spot on here passenger.

The confrontation with your H should happen AFTER you have exposed to others. NEVER warn your spouse you are going to expose his affair to other people, just DO it.

Again Saffie's spot on about Retro. Your husband will likley not go if he gets wind you are exposing his affair to everyone. But Retro. says on their own website that it won't be much help to couples in an affair.

Just expose the affair to anyone who you think may put any kind of pressure on your H. Don't ask them to keep secrets or anything like that.

GET EVIDENCE. MOST people won't believe you. I know these are your friends, but exposure will teach you who your friends are... and aren't... its a very enlightening activity.

The exposure should include these points :

1. Your husband is involved in another addictive infidelity (never call it a relationship, call a spade a spade)
2. You value your marriage and want the affair to stop.
3. Ask them to support your marriage and your campaign to save it from attack by this OW.
4. Your H's infidelity is hurting you and your family.
5. Thank them for their time