Family
- father Tom Liu: Emigrated from China
- mother Cecilia Liu: Emigrated from China
- brother John Liu: Born c. 1965
- sister Jenny Liu: Born c. 1966
Companions
- Companion Will McCormack: Brother of actress Mary McCormack; began dating in 2005
- Companion Zach Helm: Began dating in July 2003; announced their engagement in April 2004; split late in 2004
- Nicholas Lea: dated in 1997-98
