And growing her hair was... difficult? Or she just didn't like the prospect of maintenance?
Well, I'm sure their relationship is fine if they've been together for a while.
Discussion
There's just an age around 40 or 50 where women all crop their hair. Just like they all wear only pants.
Most women orient themselves exclusively on other women (and trans/effemjnate men because they mimic women). I just didn't realize that because I'm not in any girl clique. I have girlfriends, but we're a collection of girl-outsiders, so it's an unusual dynamic.
Most women are part of some female herd.
My suggestion was intended to help her have a relationship that is more than merely "fine", but I've discovered a lot of women don't want that. If they want romance, they get a new lover. And they're ALWAYS willing to grow their hair out and wear sexier clothes, for the new guy.