Complex sentence: Mariano competed on "The Amazing Race 7" with his fiancé and fellow "Survivor" alumnus Amber Mariano, placing 2nd; the couple, now married, returned for "The Amazing Race 11", where they placed 8th.
Split into simpler sentences: Mariano competed on "The Amazing Race 7" with his fiancé and fellow "Survivor" alumnus Amber Mariano, placing 2nd. The two, now married, returned for "The Amazing Race 11", where they placed 8th.