I am pretty sure thats why he's doing all this. He has stupidly assumed that Vidya is not happy with him and I guess he feels he should give her the happiness a wife deserves, as he had promised while doing the saath phere.
He even smiled at the mention of him going to the mental hospital. Why doesn't he understand Vidya....even now?? He still doesn't believe her when she says she loves him how he is. ðŸ˜ðŸ˜