those comments are fuelled by jealousy over the popularity of Heirs. The comments aren't that bad (in my personal opinion). There will always be people not understanding why Heirs was so popular. However, the show had good reasons to be the mega hit it was. First it starred Korea's most popular male and female actress, it also had the up and coming second lead (KWB), the other actors and actresses in it were popular too like CJH and Krystal. The writer was famous for producing mega hits. Before Heirs, LMH popularity was dipping. Heirs helped him gain a lot of young fans so in a way I am happy for PSH. She helped her co-star. SH is a smart girl, she never allowed herself to have a relationship with him otherwise she would be called someone's ex. SH focused on her career and I hope she continue to do so.