According to Pavelka's spokeswoman Janice Lee, the couple has called off their engagement.
"Jake and Vienna have split. They appreciate the respect for their privacy at this time," said Lee.
After choosing 23-year-old marketing representative Giraldi on "The Bachelor: On the Wings of Love," 32-year-old pilot Pavelka competed on the 10th season of ABC's "Dancing with the Stars" and was eliminated fifth from the competition.
Only four of the 13 previous couples who met on "The Bachelor" are still together.
The Associated Press contributed to this report.