Ys but thats the thing. He is abusive and everyone calls it an expression of pain . He has learned nothing from seeing Sahiba. Angad can conveniently forgive and forget whatever he wants- Seerats ema offer, manbeer paying criminals for child kidnapping, daarjis poor judgement, previously Gary's casanova crap but now suddenly if he's decided to be angry then thats endgame. Abey kyun?! He thinks its his way or highway. Sahiba is not asking him to blindly trust Gary, she's saying to not be hateful and angry because that affects him, his mental and physical health.