Lindsey Graham's memoir discusses why he never married

Lindsey Graham's self-published memoir, "My Story," released in 2015, discussed why he never married.

Graham attributed his unmarried status to timing, stating the opportunity never presented itself or he never found the right person.

He had relationships with girlfriends in law school and during his Air Force service, including Debbie, Carol, and Sylvia.

Graham considered proposing to Sylvia, a Lufthansa flight attendant, but ultimately never did.

He also cited taking care of his sister as a factor in his single status.