Boundaries

Does it make me a bad girlfriend to get upset with my boyfriend when he comes in at 4 in the morning even though he was with a family member. He has done this more than once and we argued about it more than once but he doesn't get what I'm trying to get him to understand that when you are in a relationship coming in anytime of the night is disrespectful especially when it doesn't matter who I'm with or what I'm doing I make sure I make it home before 12 am