Rite of Separation
From Memory Alpha, the free Star Trek reference.
The Rite of Separation is a Bajoran custom which is performed when two people end their relationship. The Rite involves celebrating for several days and gives the couple time to remember the good times and seek out "new opportunities".
Julian Bashir and Leeta performed the Rite of Separation on Risa when they ended their relationship in 2373. Worf thought it was a "frivolous" way to end a relationship, but Jadzia told him "not every relationship has to end like a Klingon opera". (DS9: "Let He Who Is Without Sin...")
