11/18/2011 04:20 pm ET | Updated Nov 19, 2011

Madeline Cates Joins Marines To Finish Job Her Fallen Fiance Started (VIDEO)

After her fiance was killed in Afghanistan, Madeline Cates, 21, committed to finishing the mission the love of her life had started.

Cpl Travis Nelson died in August, five weeks after he was deployed, leaving behind a brokenhearted Cates, reports.

"It wasn't suppose to happen," she told the news outlet. "He was the love of my life."

Though grief-stricken, Cates is determined to honor Nelson's memory. She joined the Marine Corps and is scheduled to begin boot camp in March, the same month the two were slated to marry.

"He told me about everything good and bad, so I know a little bit what to expect," Cates told "I feel the need to finish it. I want to see what he saw, do what he did."