Ever since becoming a dad in January, Shay Mooney‘s favorite audience is made up of one very small fan. “Anytime I’m holding him, I’ll make up silly songs about him,” the Dan + Shay singer says of son Asher James, who was born Jan. 24. “He smiles so big and it’s the most amazing feeling in the world.”
Mooney, 25, admits that he and fiancée Hannah Billingsley, 26, are “very emotional parents. We’re always crying happy tears!”
Calling from Nashville, where Mooney was taking a break from songwriting and Billingsley was giving Asher a bottle, the couple told PEOPLE all about life with their 9-week-old baby boy.