Huge Mistake

When my husband finally agreed to go to the party I was thrilled.
He knew I wanted to have sex with the host, but eventually agreed after lots of badgering and pleading from me, knowing like me, the host was supposed to be well endowed and fancied me.
At the party, which by the way was a private sex party holding forty plus people, I'd already sucked off one guy and had another tongue me as my husband watched, sort of.
He'd had an offer from a woman, but declined her saying he wasn't interested and went and got a drink.
Finally the host took me upstairs and fucked me. Only he didn't last long and I was left feeling extremely frustrated.
Going back downstairs I couldn't find my husband. Then a guy told me he'd gone upstairs with a young woman.
I went up and found him lay on a bed, with this very pretty young brunette bouncing up and down on his cock.
They didn't see me and it was obvious they were both having a great time, so I left them to it.
Back downstairs an hour later, my husband and the young woman came down laughing and kissing.
My husband introduced her to me and she said "I can't believe you let him fuck other women. He's amazing".
We all had a drink, and they carried on being flirty with each other.
Then right there in front of me and everyone else, she took my husband's cock out and gave him a blow job.
I couldn't help myself from feeling so jealous and stopped them. But my husband told me "What's good for the goose, is good for the gander".
They walked into the huge kitchen and I followed to see my husband fucking the young woman from behind over the kitchen island.
Half an hour later we left, but not before I watched my husband having a very passionate kiss with the brunette.
It's now been eight months since the party and I'm now living by myself.
My husband who never really wanted to go to the party, is living with the young woman.
They've apparently been inseparable and it hurts. It hurts a lot.
My husband is forty one, she's twenty four and from all account's he now wants a divorce (He's not filed yet).
I've made a huge mistake and miss my husband terribly. But I now know I hurt him too.
Only yesterday I heard they're moving away, so I won't even get to see him around.
What a fool I've been.