It’s been almost six months since Rascal Flatts‘ Jay DeMarcus and his wife, Allison, brought their baby boy home from the hospital. Now that little Dylan is big enough to sit up by himself, his country star daddy is comfortable sharing adorable pictures of him on Twitter. The Rascal Flatts bass player tweeted a photo of his smiley son on Saturday morning, sharing that his first son is a delight. “Our baby Dylan is the happiest baby ever!!!” he wrote. He’s not lying — Dylan is one happy kid. (The DeMarcus' are also parents to 2 year old Madeline Leigh.) SOURCE