Don Goyo and his wife

The Popocatepetl aka Don Goyo and Iztaccíhuatl volcanoes
A little wikipedia [link] about this tale:

"Iztaccíhuatl's father sent Popocatepetl to war in Oaxaca, promising him his daughter as his wife if he returned (which Iztaccíhuatl's father presumed he would not). Iztaccíhuatl's father told her that her lover had fallen in battle and she died of grief. When Popocatépetl returned, and discovered the death of his lover, he committed suicide by plunging a dagger through his heart. God covered them with snow and changed them into mountains"