YOKED IN FREE WILL
As Saints equally yoked together, the exercise of free will in marriage involves guaranteeing the other's free will in the knowledge that each is equal in the Lord.
Of course, this is not about developing one's own free will. It may be that when free will is practised in the bond of love the couple will find themselves yielding it to the other.
The couple should consider what the reality of practicing free will means right at the beginning of being betrothed.