Yes, me. Two years ago. I know EXACTLY how you feel. SAHM. Almost sexless marriage. Always SWORE she'd never have an affair, because she had no interest in sex, and yet there it was -- the e-mails, the texts. She was 46, and he was 28, and lived at home with his parents!
I felt like I'd been punched in the stomach.
What do you want to do? Do you want to fight for the marriage? This is all pretty typical "script" stuff, and I can help you bust up the affair, but the reconciliation is gonna be hell-on-wheels.