Khammam: A youth of 25-year-old set his lover on fire on Sunday night following a tiff between the two and later immolated self in Bhadradri-Kothagudem district. Vinod and Tejaswini who were in a live-in relationship had been staying in a rented house at Ramanjaneya colony in Chunchupalli for the past five years. The two are learned to have frequent arguments between them and they had one on Sunday night. Vinod in a fit of rage pour kerosene on Tejaswini and set her on fire. Later, he too immolated self and ended his life. Noticing the fumes from their house on Monday morning, locals alerted the police. An investigation is on.