Do you mean that literally or are you just saying that to make fun of me?
Because on YouTube and on the internet the word cuck has no meaning because people will call other men cucks for being in an open marriage with his wife or for just watching straight porn. Which is completely ridiculous in my opinion.
It doesn't matter that it's with a woman. You are, by definition, a cuckold in this scenario.
Edit: Stop being so concerned with definitions and what internet trolls think. Just have a good time with your wife in whatever way that manifests and stop worrying.
I guess you're right I shouldn't care at all what internet trolls think about how me and my wife choose to live our relationship. I should just enjoy being a Cuckold for my wife because her happiness is all that matters to me