O Kadhal Kanmani (2015)

Adhi a happy-go-lucky lad, bumps into Tara, a bubbly girl loaded with energy and fall in love. The duo have plenty in common and the most striking one is that they both hate marriage. So after flirting with each other, they move in together for a live-in relationship. Their jolly go stint rocks on until that juncture comes when they have to answer the big question of whether to move forward or not.