I actually think it would be brilliant if they showed that she left because of his illegal ways of earning money, 'cause clearly he's been doing it for a long time. Now when she meets this Raghav 2.0 he would be doing business legally so her concerns about his methods would no longer be an issue. Now that Raghav has gone through something tough that made him change his ways, he might actually better understand his ex and no longer be upset with her.
The other thing could be that he himself became so obsessed about earning money that he prioritized it over her (which would not surprise me) and this drove her away. He may not have been mature enough to understand why that hurt her or made her leave. Now with all his life experiences he is in a better position to get the big picture. He has clearly compartmentalized his bitterness towards her so he will need to address it. It might also explain why he hasn't been forthcoming with Pallavi a few times, because this lack of trust after his experience with his ex may have made him clam up. If that's the case then he needs to let go of his bitterness and move on.
Either way, the point is that she hurt him in a major way and caused severe emotional damage. He clearly never got closure. It's not yet obvious how long ago they were in a relationship but I guess it might be during the period where he was starting to build his business.
Even I had this in my mind...what if she left him because of his unlawful activities ?
Or since raghav has always been impulsive , he might have thought or seen something , and misunderstood her that she is behind money, which explains why he was so obsessed about money and adamant on money can buy u everything and it is important ....
I hope pallavi doesn't start her moral science lectures and sincerely hope they stop showing pallavi making raghav her mission..rather show her understand him..I guess the last time she actually genuinely understood him and his feelings was when he told her about krishna rao..
So hope this track we get to see both closure to raghav's past , addressing his fears , his insecurities , his trust issues and Pallavi understanding her husband and accepting him the way he is....in process Raghvi coming closer