i think it wasn't sameer ...
i think aman might have found it fishy ...
1.rosh didn't hide to dadi that she broke the circle if she was culprit she would have lied easily ..
2.when aman asked her she lied that sameer blackmailed her ..
3.aman might have found it fishy maybe he saw sara running to rosh and might have got to know something wrong ..
4.maybe to know the truth he dressed up and took the cheque to get to know what's up with these girls ..
spoiler --aman -saima emotional he was in jeans and jacket..
precap---drama to fix sameer once for all maybe ..
note---sameer hand big and plump but aman's neat ..
sameer didnt pick the phone and they hardly showed him after that ...enjoying his victory