Lenara Kahn and Jadzia Dax consider reassociation.
Reassociation is the resumption of a romantic relationship between two joined Trill by their subsequent hosts. (Platonic friendships without a romantic element are not subject to this rule, and may be resumed.) Since the point of each successive host is for the symbiont to acquire new lifetimes of experiences, Trill consider re-connecting with relationships from a past life "unnatural". Joined Trill who reassociate are exiled from Trill society, and their symbionts die with the current host since they no longer have access to new hosts. This is a dire consequence, since for Trill nothing is more important than protecting the life of the symbiont. (DS9: "Rejoined")
- The concept of Reassociation being a crime conflicts with almost all other star trek resources on the trill. For example, in TNG: "The Host", the Odan symbiont appeared willing to rejoin with Beverly Crusher after its transference into a new host. Also, Ezri Dax re-joined the crew with no apparent legal trouble. It is speculated that the law does not apply to association with non-Trill, or that an exemption was made from the prohibition.