What was Seturam's Motive ?

I started watching JNDSD during Ravish Vividhaha's marriage. But I completely failed to see the logic of the Cv's to introduce a fake Atharv who's only intention was to molest Vividha?

You know I don't know why I still think that Sethuram was not behind those molestation attempts. I think he was paid oodles of money to take the rap for someone else. I have my own suspicions as to who that person is but I shalln't say. Someone needed to divert attention from themselves by getting Sethuram caught because things were getting a little sticky with Vividha and Ravish so determined to catch the culprit.

This track had no logic