He sexualized diaper changing?!

Upon a conversation with a friend of mine, the topic of her wanting a daughter came up. She's got 2 sons so she really wants a daughter. During this conversation she mentioned that her boyfriend, the father of her youngest son, had said that if they have a daughter he won't ever change her diaper because he'll feel like he's violating her because "he loves p***y". I'm not sure if it's just me over analyzing, but when she said that I cringed. I don't think thoughts like that should cross someone's mind at all. Changing a diaper is changing a diaper, there's nothing sexual about it. Am I the only one who thinks this is odd and slightly alarming?