Th'leila Bok was a joined female Trill in the early 24th century. Prior to joining, Th'leila was in a romantic relationship with Anjad Kodell; however, the relationship ended once Th'leila was joined with Bok, in part because of Kodell's jealousy as an unjoined Trill, and in part because of the personality change brought on by the joining. (TLE novel: Well of Souls)