Wife wont admit to affair and its driving me nuts!

[Morbo]

All the responses, thank you. I really need these right now.

TO answer your question LH19, OM is near 50, not sure.

I'm in a bad place today.
I've kinda known for coming on a year or had my suspicions.
She is such a master manipulator, she always made me feel like a fool for even suggesting anything improper. NO apologies, no answers and I was the fool who would normally end up apologizing.

Today, when I collected my kids my W had a big box of gifts for me. Knowing her, they'll be really thoughtful.
This causes me immense confusion because I want nothing from her. Looking at her causes me pain, what she's done to me and and my girls is so cruel. And then I think that maybe its just a plain 'ol loss of love thing and not an affair. I know its not though and I have to face it.

I'm so angry now my legs are shaking and I just want to confront both of them at their work. Let them know what they have done and embarrass the hell out of them but I still dont have the concrete proof and I'd look like an idiot.
I keep thinking of texting/emailing her but I know she'd have a smart answer...guuuuh, this is hard.

She wants to go for breakfast on xmas eve too with the girls and play happy family but I just dont want to because she disgusts me/angers me. I cant even look at her anymore.
What to do next?