Love and Deception

The sudden and mysterious demise of his father, Phipop, leads Pithai to discover that his girlfriend Kamolthip was, in fact, his father's lover and, therefore, a prime suspect in his death. To escape, she runs off with another man, and Pithai begins to blame Chadathan, her younger sister, who has always had a secret crush on him. She soon finds herself in a love trap with Pithai that binds them together, but will they ever be able to escape the cycle of love, revenge, and pain?
(Source: ThaiDramaUpdates, Jwells at MDL)
~~ Adapted from the novel "Mon Kammatep" by Orasa Tossanut.