It's most definitely bullshit,leaving aside the fact that the poster had no hard evidence to back it up, and I don't know why people here keep falling for it.
I've lurked on this forum for a few years now and have seen tons of people claim to be husbands or boyfriends or significant others of long-haired models. Off the top of my head I remember one guy posting vids with Mila from her IG, which is publicly-visible, claiming to be her boyfriend even though she's married with kids.
I guess some people get off on pretending to have relationships with real-life rapunzels, but when it comes to supposed life-updates about these models, nothing these people say should be taken at face value.