Arjun holds himself responsible for whatever happened as it was him who forced Purvi to quit the job. Manav asks him not to blame himself and tries to make him understand Purvi would have got a job somewhere else but Vinay's family's intentions were not good as they were only interested in Purvi's salary. He adds everything happens for a good reason and asks him to go home.
Arjun is driving remembering what happened how he told Purvi he can't come to function, she asking him to come as she would feel nice, him giving her anklet telling her she is looking pretty, Vinay-Purvi posing for pictures, his 15 day challenge, how Archana breaking the engagement. His car finally takes a turn.
Arjun was feeling guilty and he couldn't stop thinking about the incident. The flashes keeping coming in front of his eyes as he was driving back home. Had he not challenged Purvi not made things difficult for her at her forcing her to quit her job what happened would have not happened. However he didn't understood that whatever happened today was good for Purvi. Had it not Purvi would have been married in a house where she would have been judged based on her job her salary not on her qualities/goodness.
Arjun needs to stop blaming himself. He needs let out whatever he is feeling the guilt for holding himself responsible for whatever happened with Purvi. Arjun thinks of him as a culprit and the only way his mind and heart can be at peace is when he talks to Purvi who releases him from his guilt makes him understand he is not to be blamed for what took place.
PS :It seems Arjun is heading to somewhere else instead of going to his home. If he would land up at Purvi's doorstep to apologize for his actions that caused her family pain or to talk with himself alone in someplace let out whatever is inside him only time will answer that question. Knowing Arjun it will not be surprising if his heart takes her to Purvi's home.