Hi offroad,
Interesting discussion. And one I am trying to wrap my mind around also.
I think we are talking about both sides of "need" here. Both sides "needs" validation for whatever their love language is. And the other side needs to do the validating.
For example, if H feels he is doing something just for me, for example, gift giving. Not to acknowledge that gift in a way that makes him feel good about himself, is a form of me invalidating his need to be acknowledged for that effort.
Now gift giving isn't big for me. I would rather have time spent with him than a ruby bracelet
and anyway, I prefer sapphires and emeralds.
So I say, that's lovely dear. And H feels has not made me happy. And never underestimate the need for a male to make his mate happy. So H feels bad. And I don't feel that special either.
So you are right it is a communication 'thing'. But it is also an awareness 'thing'. The more I am aware of his need to be validated for his efforts and vice versa, the more efficient we are at meeting those needs.
I read somewhere that resentments are past invalidations remembered. We don't usually remember what people say or do but we sure remember how they make us feel.
Peace and strength