Niram (1999)

Aby and Sona are neighbors and are family friends. They share a special form of friendship and romance was nowhere in their plan. But when Sona goes to bangalore to participate in a youth festival, Aby misses her a lot and realizes his love. But he is hesitated to tell this to Sona, thinking it could break their friendship. Sona tells Aby about Prakash Mathew, who proposes to her when they were in Bangalore. Aby supports Sona to start a relationship with Prakash, trying to be the real nice friend. Sona proceeds and now Prakash's and Sona's marriage is fixed. What happens to the special friendship that they were sharing forms the rest of the story.