Vishal, a resident of Surir village was having an affair with the girl belonging to a different community.
According to the girl, both couldn't confront their their respective families and hence decided to end their lives, police said.
Both of them, adults, resorted to the extreme step yesterday, in which the boy lost his life whereas the girl was saved in time.
However, the boy's family has alleged that this is a case of honour killing and has lodged a case of murder against the girl's family.