I don't want to be called "gorgeous", but I admit that some of my "love language" is positive affirmations. As a man, I want to know that I am making a positive impact on my family, my wife, my community, my work. I crave that strong positive feedback, just as much or more as anyone.

So yes, I think it is a bit sexist or at minimum gender typing. And I don't think it's necessarily a "lie" for you to overstate your feelings. You might have matured in your approach, but I believe that everyone appreciates (to some variable measurement) positive affirmation from their partners. And that your lie was recognizing your partners needs for inputs, to help them in their self-image, and to assure them in their self-doubts. These are not lies.