Jesse McCartney is opening up about her mindset as she prepares for the arrival of his and wife Katie Peterson’s second baby. “I’m pumped. Very excited,” McCartney, 39, told TMZ on Thursday, October 8, adding that being a “girl dad is different.” McCartney noted that he has “no idea what it’s going to be like,” but is “very psyched” about soon having both a girl and a boy in their family. “I told my wife, if it was two boys, we might be going crazy. So I got one of each and maybe we can call it there. We’re even. Nobody’s outnumbered in the house,” he said. “But we’re very...