name of MM novel?

[Mahalakshmy]

i want the name of MM novel, where hero age is less than of heroine age.
He was less educated also.Hee will be car driver for her and later marry her. At the end of novel he opens cycle/car shop( i forgot)

 

[Vijaya RS]

Story name is Mental Manathil.

 

[Mahalakshmy]

Story name is Mental Manathil.

thank u

 

[SriMalar]

Mental Manathil