Birdie Buddy
버디버디 (original)
When a former golf champion takes on coaching two different young women, the training devolves into romantic flings, revenge, and so much more.
Starring Uee, Jin Ji-hee, Lee Yong-Woo, Lee Da-hee, Oh Hyun-kyung, Yang Hee-kyung, Park Sung-woong, Yoo In-na, Yoon Yoo-sun, Lee Byung-joon
Watch "Birdie Buddy" from streaming services Tubi TV, Amazon released in 2011. It's a drama and romance show, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of show, and is currently available to watch for free.