Marriages are made in heaven.

The saying presents marriage as a union shaped by fate or divine will rather than by human planning alone. It can express faith that two people were destined to become spouses.

It may also be said with irony when a marriage appears notably mismatched or unhappy. In that use, the elevated claim is deliberately set against disappointing reality, rather than endorsing judgments about the people involved.

Use it when discussing marriage as providential, destined, or beyond ordinary human control. It may be sincere and celebratory, or dryly skeptical about a particular couple. Because it invokes religious belief, it may not suit all audiences; ironic use can sound unkind when directed at a troubled marriage.