It is ok if you want to go shorter, but you should be truthful with your husband about your fetish. Don't be ashamed that you have this fetish.
Im a 20 years old male from france. Got a hugeeee hairfetish. Get aroused when I see undercuts and sideshaves. Wanted to share my experience wth you and talk about it. No one knows that I got one and never found anyone who I can talk to without thinking that Im weird