Going by mahaan Virat Chavan's dialogue, he thinks Sai is the cause of all his problems but in reality he is actually the cause of all of Sai's problems.
Inspired by his logic, I'll explain why :
1. Virat becoming an IPS officer. Could he not be like other jobless Chavans, if he didn't have a job he wouldn't have met Sai. /s
2. Virat's bullet taken by Kamal sir. If the bullet hit virat as it was intended, Kamal sir would be alive and would take care of her daughter. She wouldn't have been married at 18 and Virat's death would have had one less abuser in the world.
3. Virat marrying Sai. Had he not married her, she wouldn't be so depressed now
4. Virat bringing Sai to chavan niwas. Neither she would've been brought in chavan nor would she be abused daily
5. Virat's pyaari cheez's verbal abuse on Sai. Neither would've virat left Patralekha, nor would she try and ruin Sai's life at every instance
6. Virat's family's abuse on Sai. Had she not met Virat, she would not have been stuck with this cruel, abusive family
7. Virat's own abuse on Sai. Had there been no Virat, Sai would not have been denied food, kicked out of her rightful marital house at midnight, locked against her will, manhandled, gaslighted, verbally abused and insulted at every instance, forced to distrupt her studies and pressured and expected into being a dutiful wife to her emotionally cheating husband.
And the list would go on, how she's expected to study a tough course like medicine and slog at home doing household chores while handling her husband's ex trying to ruin her life with her own husband being abusive along with his cruel family.
Virat Chavan blamed Sai today after Devi left because he and his true love insulted her. Virat has consistently been shown to blame all his woes and actions on someone else. Sai is a soft target who has no backing so he keeps on abusing her and gaslighting her now.
I made this post, just show how hypocritical this so-called principled man is ( point 1 & 2 is satire of course meant to show how virat illogically blames Sai for everything, so I just switched places). He blames Sai for everything, even what she had no role to play in but has effectively ruined her entire life.