Padam Padam... Os Sons das Batidas dos Corações (2011)

the plot is different, but these two melo-dramas have several similar element: Murder scene in the past. Friendship and betrayal. The main female lead who sincerely loves the male lead no matter how sick and how screwed up he is. and beautiful acting! (but stil Jung Woo Sung as Yang Kang Chil is still the best acting I've ever seen in dramas)

They are similar in some things. Both deal with illnesses. They have a good romance, good ost and good story. Both are amazing :)