Gehenu Lamai is a 1978 Sri Lankan drama movie directed by Sumitra Peries. It introduced actress Vasantha Chathurani and was a critical and box office success.
Kusum then recalls her childhood spent with friend Nimal. She is taught by the older boy. Kusum then starts boarding school with a transition to her at an older age. She gains a friend in Podmini who admires Kusums innocence.When Kusum visits home, she takes to helping out at the home of Nimals mother, Mrs. Satharasinghe. On one such visit Nimal engages Kusum in a relationship. They fall in love though Kusum starts to feel guilty due to her lower class status. Soma is chosen to be part of a beauty contest and Kusum and Nimal take the chance to spend time together. ........
Source: Wikipedia