EF,
If karma came and knocked this guy in the head, you still wouldn't be happy. Why? Because you would find fault with whatever happened to him.
If he bought a brand new sports car, pulled out of his driveway, and got hit by a bus, you would feel the punishment wasn't good enough because he only suffered a broken arm and bruised face from the airbag. Sure his car is totaled and he's in pain, but he didn't "suffer enough".
If he died in a home invasion, you would feel slightly better that he was dead, but then you'd be pissed because he's dead, his life is over, and you're still stuck with the consequences of your affair.
Look. Doesn't matter. Really doesn't.
The chances of the OM apologizing to CL are non-existent. And I guarantee you, even if they did, he wouldn't feel any better about the fact his wife was fucking around. Somehow "I'm sorry" from the OM just doesn't quite cut it.
My husband doesn't want to see or hear anything from my OM. Ever. At all. The best thing for him is that we are all NC and he doesn't have to worry about some douche canoe showing up on our doorstep, a text on my phone, or an email in Outlook. NC, NC, NC. Physical and mental.
I am confident if I put enough time and energy I would figure out a way to make them suffer.
I am confident if you keep putting this much time and energy into vengeance on the OM, CL will walk. Your focus is completely in the wrong place. It should be on YOU and your actions. Not OM. CL didn't marry them. CL married you. And he deserves a wife that will get to the bottom of her "whys", who is NC with the OM, who is 100000% in the marriage, and is committed to healing the relationship. That EF, is what you need to be putting your time and energy into.
Dieing would be easier
For who? You? What are your reasons? We don't need to see them here. But you need to think about that. I think once you list them, you'll realize that that's an incredibly selfish way to think.