Mark McGrath and his longtime girlfriend became the proud parents of twins in April -- and they're pretty darn adorable.
Son, Lydon Edward, and daughter, Hartley Grace, made their official debut today on PEOPLE, where the Sugar Ray singer and Carin Kingsland revealed they had difficulty conceiving the cute kids -- and turned to IVF for help.
McGrath adds "There's a bond that the four of us share that nobody can mess with."
