The">The traditional

marriage vows

made by couples on their wedding day contain a promise to stay together "

until death us do part

."

But a proposed change in the law in Mexico could make that a slightly less binding 'two years' time'. The">The idea is to cut the divorce rate by creating renewable marriage contracts so lovers can try living with their other half before making

a lifetime commitment

.

Newlyweds

would take a minimum of">of two years before deciding whether to cement their relationship or

split up

, under plans to alter the city's civil code.

If it becomes law, the contracts would make clear in advance the responsibility for

marital

duties, such as childcare, schooling and">and

household budgeting

.

Half of">of all marriages in Mexico City currently end in a

break-up

. The author of the proposal hopes that being able to renew or dissolve the marital link after a fixed period of time will lead to more harmonious relationships and keep more couples out of the divorce courts.

The

custody

of

dependents

in cases where couples decide not to stay together beyond their initial term would also be

set out

at the beginning.

It's hoped that this would avoid the usual

wrangling

and

emotional turmoil

experienced by families going through a divorce.

But not everyone thinks it's a good idea. Family campaigners say it would contribute to a "throwaway culture" which would create more rather than less