I really really really wanted to like this drama, and for the most part I had up until episode 11. It's one thing to cheat and then tell your partner and ask for forgiveness, but this drama is normalizing cheating. The whole "follow your heart" mantra can still come with basic morals like confessing to your current partner and breaking up with them.
Not sure why this basic, and VERY HUMAN, action wasn't taken during the drama. Personally, I really enjoyed the subtleness of the main character's romance, and I was waiting for the moment when they finally broke it off with their partners and were with one another. Instead, deceit and adultery were apparently their only option.