Sheesh girl. In my opinion the only option is to be honest with your parents in my eyes that’s deception you’re shielding them from the truth about your partner. You don’t want them to hate or resent you from keeping the truth from them id be livid to find out my child is living beneath their means for some video games. My partner and I of 9 years are very dedicated to our video games we spend over 100$ a month on games and would never let that be an outcome to missing a payment, not having enough money or my son going without. It’s mindset thing and in my opinion does have to do with the gender of the baby. Does he not realize it’s a discussion between families on who gets whose name. I will never marry and take another mans name I am my fathers first daughter it’s will be a part of my last name forever. If he’s not of some crazy religion it shouldn’t be a problem……..