I enjoyed my wife having sex with an old friend

I knew he wanted her the moment he met her. I said nothing to either of them. I suspected sex and secretly enjoyed the idea.
I was involved in arranging situations that would give them the opportunity to have sex. It took him six months to seduce her.
I knew he was better equipped to please her sexually than I was.
I fantasized about them together and would masturbate imagining them having intercourse.
I learned about the title “cuckold” and wondered what level of that category I was in.
Her death in a car accident ended it and I now have a lasting feeling of emptiness. Never to have the ability to have a meeting of the minds with her and renew our relationship on a healthier basis.