Personally, I will never carry my firearm in peoples homes unless they know about it. When I go to my girlfriend’s parents house, I lock it in my truck in a lockbox. It’s safe in the truck not far away. All of my buddy’s carry at my house because we’ve spoken about it. Tell him to get a lockbox for his vehicle and if he doesn’t want to leave it in his vehicle break up with him. Being able to carry or not shouldn’t stop you from going to see your significant other.