Do you parents often comment on or give you advice on how to fix your stutter? Until I blew up at my dad and told him it's never going away so he better get over it. He'd always be at me about it. Telling me to stop. Think about what I'm saying and slow down. All the usually stuff people say when they have no understanding about a stutter. It actually made me stutter around him more than anyone and after he stopped commenting about it. I stuttered way less around him. It might just be you have a record of being fluent with girls so you are relaxed and fluent and you know your parents are conscious of your stutter so you're more conscious of it making it worse.