I think they brought it in for all the right reasons. It's very natural to get worked up when you are unsure of yourself, as Ram was, and afraid to express your feelings, whatever they are. In this case, the stakes were too high for him.
At the same time, Priya had been expecting much. She, I think in this particular case, was mature enough to know that he loves her too, and is playing the 'who'll say it first' game, and she was playing along. Yet, his ignoring her got to him, his seeming disregard for her feelings, his seeming 'take her for granted' acts incensed her and it's all very natural to feel and react that way when you've been up all night waiting for someone, playing a 'who'll say it first game', being anxious the entire time, only to get yelled at and blamed for eyeing someone else. So it was quite natural.
I totally recall college days when I didn't tell my now hubby how I felt then, and wanted to, and was anxious coz although he'd said it first I was too shy to say anything. Yet, my not saying it made me anxious, as I feel Priya was. Even though I knew how my hubby felt, as is the case with Priya. And when he didn't seem to care much, boy was I agitated.
So it was all VERY natural, in my opinion.
BUT
I do think the monologue went on for a bit. I loved it yesterday, and for the first time had tears in my eyes over a confession so real and touching. But it didn't need to continue today. I actually skipped those parts when she continued talking only to hear what he had to say.
Nevertheless, a standing ovation, in my opinion, to ST for making it oh so real. Brought back my college days for me.
Ahhh - the good old bitter-sweet feeling of love and insecurity, the anxiety, the pent up frustration - all depicted very beautifully by ST.
-S