Don't Hesitate (Korean: 망설이지마; RR: Mangseolijima) is a South Korean television series starring Lee Tae-im, Lee Sang-woo, Kim Young-jae, and Bae Min-hee.

The morning soap opera aired on SBS on Mondays to Fridays at 8:40 a.m. from October 5, 2009 to February 26, 2010 for 98 episodes.

Jang Soo-hyun was a woman who'd previously devoted her life to love, even donating her liver to save her first love, but was rewarded by betrayal.

Until she meets Han Tae-woo, a man who has never known or believed in love.

Tae-woo had built a wall around his heart in fear of being hurt again, but Soo-hyun becomes someone whom he learns to sacrifice everything for.