SP/Radha Marriage

I don't think so.

Radha is the woman that SP cheated on Gayathri with. He hid this from her for 30+ years. if Radha/SP get married, it basically would imply that it's okay for the two cheaters to marry if the spouse dies. I don't know, I think it's tacky. If SP loves Gayathri as much he does, I don't think he would opt for a second marriage. He isn't a young man who needs to raise little children. Most people who lose their spouses at SP's age don't get remarried in India, let alone with a woman they had cheated with. SP and Gayathri have had such a long married life, that I do think it would be disrespectful of him to forget that and marry Radha just because of feeling lonely. Radha is indirectly involved in Gayathri's death after all.

The situation was different with Yash/Aarthi's marriage. Their sort of second marriage, I agree with.

What are your thoughts?

Yes they cheated..but neither Cas nor Radha showed any interest in getting involved in each other's lives!!

Considering Cas's situation now, I think they shoul start contemplating regarding his PV