I have already seen that movie in tamil( o kadhal kanmani) .
The Main story is about two individuals who don’t believe in marriage and are okay with having a casual affair with someones sentiments.the two leads fall in love. Soon, they start living together with an old couple Mr Ganapathy ( Prakash Raj) and his Alzheimer’s ailing wife Bhavani. Meanwhile Tara gets scholarship to study in Paris and Adi gets an opportunity to go to US for work.
Soon, problems and fights start to arise as the couple try to maintain that marriage is not their cup of tea, but inside have insurmountable feelings for each other. Will they chose their careers over marriage? Or will they sacrifice their careers for love?