Jerry Maguire was just plain wrong. No one is ever complete without a relationship with God. To have this relationship, you must repent of your sins (you are a sinner!), ask Jesus to be Lord of your life, and then follow Him wherever He leads.
You may remain cynical about this if you wish, but Jesus alone is the perfecto best friend and love you’ve been looking for. He’s proven Himself to me and multitudes of Christians around the world; we all testify that He is Faithful and True. Indeed, I’ve been serving Him for around three decades now, but He had me at “It is finished.”