That was his fear too ... Remember day before the accident, he was applying ointment on her bruise, he thought the same thing, what if Priya leaves him. All his drunken ruckus. Somehow he knew she will leave him. She has come back to protect Shivi/Akki marriage. Another worst incident was he questioned Priya about hiding Sarika maasi divorce kaand. He cut the call and didn't answer her calls. He has seen how broken she was when her father hurled abuses at her. She hid her sadness and behaved very well in front of his friends. He acknowledged that too. Had he not realized his love, bandha would have never changed.