"She really knows what being a woman is about now," Nick told PEOPLE. "This whole journey has been eye-opening, she'll tell you that."
Indeed, a few weeks ago Mariah told the UK’s OK! Magazine that she has new-found respect for “mothers everywhere.”
Meanwhile Nick says he’s also had to do some developing of his own since the twins’ arrival. He said he is "growing every day and knowing that I have to be an example for two lives.”
Oh yes, babies will change everything Nick. Stay focused.