The hero lives for his mother. The heroine falls in love with the hero because of how he treats his mother. The conflict arises when the mother rejects the heroine. The resolution? The heroine must prove she can suffer for the son just as silently as the mother did.
Mani Ratnam tried to subvert this. In Alaipayuthey , the hero (Shah Rukh Khan-esque in Tamil, played by Madhavan) loves his mother deeply. The conflict comes when the modern heroine (Shalini) wants a nuclear family. The mother feels abandoned; the son is torn. This film was groundbreaking because it asked a radical question for Tamil cinema: Can a husband love his wife more than his mother? The film refuses to answer, ending on a tense compromise where everyone lives on a staircase landing—neither fully together nor apart.
In , Raja chooses his mother over Bhuvana—or rather, he refuses to abandon her, leading Bhuvana to elope with him anyway. The film suggests that true love accepts and accommodates the mother rather than competing with her.
Recent Tamil cinema has begun to critique this dynamic with refreshing honesty.