Jeaniessi- I think by psycho boy you're referring to Young Do and I totally agree- in terms of how he talks to her, he's never been as controlling or rude to Eun Sang as Tan who talks to her like a slightly unhinged and controlling father.
I agree that the relationship in Playful Kiss was incredibly dysfunctional and the message it sent was warped and totally not romantic. I mean, screw your self worth or dignity but chase a guy and stalk him until he goes from hating you to meh yeah sure whatever? I can't believe they made a whole show based on that premise.
But in terms of entertainment value, at least the actors had some chemistry which made them interesting to watch and believable as a couple (even though I can't imagine a real life couple like them ever being happy).
But with Heirs, on top of depicting an unhealthy relationship as romance, the romance isn't even believable. Park Shin Hye's body language around Lee Min Ho screams "get away from me" which makes it impossible for me to buy them as a pairing. She seems pained around him and not in a iloveyousomuchithurts way but more yousmellbad way.
Sigh- whatever.