Kinda upset maybe overreacting

Okay ladies, how would you react if your man told you that you had to ask him before posting your child on his Snapchat? This is our first baby together and he is a private person and he never post anything on his snapchat but allows me to get into his account and post myself on there with out asking. Why is it I have to ask permission to post our child?? I could be overreacting but it hurt my feelings either way.