Take two shoots of live-forever and pin them together on the wall. If they grow towards each other, the couple will marry; if away, they will become estranged.
Nantucket, Mass., and Western Massachusetts.

Take two shoots of live-forever and pin them together on the wall. If they grow towards each other, the couple will marry; if away, they will become estranged.
Source: Current Superstitions (1896), entry 256.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.