I think they changed quite a lot from the novel but i think it's for the better honestly
toxic 1 : brother is a psycho when Pam broke up with him he did suicide and his family blamed Pam
toxic 2 : while he in hospital he made a nurse pregnant and got married but when he saw Pam attending his wedding after he told Rak he still loves her and wants her
toxic 3 : after marriage he searched for Pam everywhere like a stalker Rak got worried about Pam safety
toxic 4: when he saw Pam and Rak together he just grabbed Pam hair and dragged her
aww that drunk scene, rain covering scene, nail polish scene, watermelon eating scene, when view asked what u do in first date and bonnie reaction so satisfying
toxic 2 : while he in hospital he made a nurse pregnant and got married but when he saw Pam attending his wedding after he told Rak he still loves her and wants her
toxic 3 : after marriage he searched for Pam everywhere like a stalker Rak got worried about Pam safety
toxic 4: when he saw Pam and Rak together he just grabbed Pam hair and dragged her
he is really a psycho good they changed him