I think Piya should go ahead and get engaged to Himesh.Because Kabir easily changes his stand.Today he is not happy since he feels he is loosing Piya.Once,she accepts him,he will make a turnaround and tell her he loves Anchal and wants to marry her as per his family's wishes.
His volte face is evident from his actions.One day he was sad about Piya leaving,then on the day of the exam instead of asking her about her exam,he shouts at her and that too,for the conversation he just overheard, without knowing the actual situation.After this even when,she kept trying to talk to him,he kept walking way or ignoring her.And during this he suddenly starts becoming close to Anchal with whom he was hesitant to even talk before that.
A person like Kabir is surely not trustworthy.For what Piya did for Kabir,he should have been thankful.No one,not even his cousins or even Anchal bothered,it was Piya who helped him in reaching the exam in time.
I hope this serial does not turn into a saas-bahu drama,where Piya has to struggle for acceptance from her in-laws and even Kabir.