Every complaint about your partner is changing your relationship
Your brain is taking notes.

There's a principle in psychology called commitment and consistency. It basically means humans stay consistent with what they repeatedly say. Once you've committed to a story, you start collecting evidence for it. Quietly. Automatically. Without realising it's happening.
Tell yourself "my partner is lazy" enough times and you stop looking for the moments he actually came through. You stop noticing when he tried. Your brain files those away as irrelevant. What it flags instead are the times he fell short. Because that's the story you told it to look for.
Say "my relationship is miserable" to your friends, your sister, your therapist, whoever will listen, and you've just reinforced the file. Every small frustration now has somewhere to go. Every good moment gets reframed or forgotten.
This isn't about toxic positivity. It isn't about pretending things are fine when they're not. Some relationships are genuinely hard. Some men are genuinely checked out. That's real.
But a lot of men and women I work with are suffering inside a story they've been building for years. And they can't see their partner clearly anymore because the story is too loud.
The question isn't whether your complaints are valid. The question is whether you're describing your relationship or slowly deciding what it is.
