The entire 3months, he kept her away without giving into his emotions. Even when Roshni apologized, he confessed that he loves her thinking that she was asleep, not to give her false hope😕 He didn't know she heard that.
The only weak point was the day before when he went to see Roshni in DD's house He asked her whether she would be with him, when he don't have anything. He did that b'coz he had made up his mind to be with Roshni even at the cost of leaving his house. He was equally excited but then he changed the decision seeing DD's plight. He didn't give her hope deliberately..😕
And I don't think Roshni would have agreed with Sid's decision if she knows he is doing it to get back DD's property. But I feel he could have told her the reason after divorce, even by breaking Simran's promise (I'm sure Simran would curse him if she knows that😡, but Sid could have taken that risk) And I think if in future, Roshni threatens him and demands an answer he would spill the beans. But Sid needs to be pressurized to break a promise, he won't do that willingly
So, in the entire fiasco I understand both SidNi are hurt by the circumstances but its wrong to say Sid played with Roshni's emotions.. I feel he is playing with his emotions more