My puppy pees in house with boyfriend but not me help!!!

Me and my boyfriend just got a new puppy named misty and she is around 14 weeks. My boyfriend works during the day and I stay at home to take care of misty. During the day she only pees in the house two times if that and the other times she goes potty outside. When my boyfriend gets home he takes over while I go get ready for bed and he will take her outside and she won’t pee but once he comes inside with her she pees inside the house. He yells at her when she goes potty in the house. I wonder if that maybe had something to do with it. Please help I’m not sure what to do