A powerful tool for keeping two people together, is to take a lock of your hair and a lock from your mate (always ask permission first). The hair should be cut in the waxing cycle of the moon. Tie the locks together with red silk thread or ribbon.
Picture yourself and your mate together while tying the knot, and as you tie it, say:
"Where the sun goes up
Shall my love be by me
Where the sun goes down
There by him/her I'll be"
Then wear the hair in a locket above the heart.