And as he poured money into research and development of the device, his marriage crumbled.

Of course sometimes these marriages crumble for the same reason as everyone else's: frustration.

Their marriage crumbles anyway in 2005, and Kevin secures custody.

His marriage is crumbling; his son and daughter are caught in the crossfire.

By the early 1960's the marriage was crumbling.

His first marriage crumbled under his recovery from drug addiction and alcoholism.

How do you find the way when a marriage crumbles under you, and you turn away from each other?

His marriage eventually crumbled; he ran on alone.

Over the next year, their marriage crumbles and Kevin secures custody.

She's open to the suggestion because her marriage is crumbling at home, and the two of them engage in a few dates.