Sumbul seems to have a crush on shaleen .. But despite what tina said, sumbul hasn't stopped them from talking before yesterday nor has she interfered in their romance
From what I've seen in the LF, he has many times stopped sumbul from leaving him... He could have dissociated from her completely ... But in their fights he insults her badly, she cries and stops talking to him and then he goes to mano her saying dosti mein chalta hai.. Rinse and repeat
Simple baat hai... He is playing the game smartly... He realizes it's all about giving content and not abt being nice.... He has 2 girls fighting over him.. That gives him plenty of footage supposedly looking desirable while both the girls look bad depending on the day... So why would he ever stop her ... Its working to his advantage