I mean, hypothetically, while the probability is pretty much somewhere between -1 and zero, in principle my wife could some day decide that she's now a Christian. Won't happen, but if she did, would I get a divorce because of that? Hell no
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition