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.

While some new parents share horror stories of staying up all night for months on end, changing thousands of dirty diapers and dealing with a constantly cranky baby, it seems like fatherhood is treating DeMarcus pretty well.

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. In the photo, he’s sitting on a plush chair, hugging himself and kicking his feet — all while holding the biggest grin on his face