Leftists in Mexico City's assembly have proposed a reform to the civil code this week that would allow couples to decide on the length of their marriage commitment.
The minimum marriage contract would be for two years, and could be renewed if the couple stayed happy.
"The proposal is, when the two-year period is up, if the relationship is not stable or harmonious, the contract simply ends," said Leonel Luna, the Mexico City assemblyman who co-authored the bill.
"You wouldn't have to go through the tortuous process of divorce," said Mr Luna, from the leftist Party of the Democratic Revolution.
Around half of Mexico City marriages end in divorce, usually in the first two years.
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