Matthew McConaughey is getting real about parenting. While making an appearance on "Today," the actor talked about his first-ever children's book called "Just Because" and how his own three kids helped inspire the story. Matthew, who shares his three kids with wife Camila Alves, also opened up about allowing their son Levi to join social media on his 15th birthday. "We're still taking baby steps into, you know, how much he's immediately in touch with what he's exploiting … we're discussing things. We had him look at a lot of other people that he looked up to their posts. We talked about, why do you like those?" Matthew explained. "This discussion is ongoing."