When Deanna was a child, she was genetically bonded with Wyatt Miller, a human, who is the son of Steven Miller, close friend of Deanna's father. The exact ages of Deanna and Wyatt were not established, but such bonding at childhood is still a common Betazoid custom, and generally results in marriage when both children reach adulthood. The marriage was never performed ("Haven" [TNG]). The last few episodes of Star Trek: The Next Generation hinted very strongly at a budding romantic relationship with Worf, but neither of the Star Trek features produced since then has made clear what, if any- thing, developed between them. Worf's joining of the Deep Space 9 crew in 2372 might also seem to imply that any relationship was concluded by that point.
2336: Born on planet Betazed ("Conundrum" [TNG]).
2343: Ian Andrew Troi, her father, dies ("Dark Page" TNG]).
2359: Becomes romantically involved with Will Riker ("Encounter at Farpoint" [TNG], "The Pegasus" [TNG]).
2361: Breaks up with Will Riker ("Second Chances" [TNG]).
2364: Assigned to Enterprise - D ("Encounter at Farpoint' [TNG]).
2370: Promoted to commander ("Thine Own Self' [TNG]).
2372: Assigned to Starship Enterprise - E (Star Trek: First Contact).