I've had a very similar experience to yours, Emboo.
Different in the small detail, in that I didn't find out about it from looking at his bank account. I found out about it from sniggering remarks from his business colleagues, and because he was a really shit liar when I confronted him about it.
He'd done the dirty on me with the full knowledge of all his business chums at an 'out of the country' business meeting with people who were also MY business chums. I couldn't be at that meeting because I had to stay home with our SEN daughter.
And that business meeting included my EX-husband. Who must have been laughing up his fucking sleeve. (Actually, probably not, because he was very supportive when the shit hit the fan. In fact, I had a wobble there because my ex -h would never have cheated on me, I'm
convinced of that. But then again, I would have sworn that my husband would never cheat on me either!)
I went through hell, my innards ached, my stomach felt like it was carrying a tonne weight all day and every day. I went from trying to make him love me a bit more, to not giving a shit. From being all over him, to really hating him. And all this while trying to care for a child with quite severe SEN and an 18 month old NT daughter.
I suppose, in the grand scheme of things, with all the medical emergencies that we had with our SEN daughter, week in, week out, I just let it pass. I had to let it pass. There were urgent and unavoidable health problems with our daughter. And he was the only other person I could rely on to care about out our sick daughter as much as I do.
So we've just rubbed along together since then. For maybe 20 years.
He's forever telling me that he regrets what he did. But it burst the lovely snug warm bubble that I thought I lived in. He claims that he now loves me more. I definitely love him less. But we are still together.
Maybe I rambled off topic, but I got it all off my chest!
So I let it pass, and sort of forgave him by default.
I needed his support at that time, and of course he loves