When I saw the episode, I thought the same thing. That might be the lame excuse for Sugni and Aditya to marry. Once again, Sugni will prove the callous prostitute she is with no consideration for her friend Amrita. And Aditya, well he is too stupid for decent words.
My prediction:-So G does not trust Adi. Adi wants to prove she can trust him so Sugni will ask him to marry her and he will.