Police said the two had fallen in love when they were studying in the same school at Derayapuram for the last two and half years. Both had discontinued their studies, with the boy taking up the job and the girl at home.
They said the boy had taken advantage of the absence of her parents who were continuously at the Coimbaore Medical College over the last five months to take care of her sister, a TB patient and lured the girl into a physical relationship, resulting in her becoming pregnant.
The parents then filed a complaint and he was arrested last night, police said.