Problem is bihaan aka manish goplani! Yes, it is true that he excels at expressions and dialogues but no can deny that he sucks at expressing himself in romantic scenes. Somehow, in those scenes, bihaan looks very childish. His eyes, smile, gestures - nothing is romantic at all.
He looks like a guy who is yet to mature when it comes to emoting love. The heated steamy love.
No wonder, we have not got to see much of thahaan!
P.S. The only time he could pull it off slightly was when he tried to hug Thapki the first time.