Bodies of the youth and the 16-year-old girl, both residents of Inderpuri in west Delhi, were fished out from the river in Sunlight Colony area this morning, they said.
The victims were missing since April 28.
Meanwhile, a suicide note has been recovered from the girl's house, stating that the victims, who considered themselves as brother-sister, took the extreme step after their families did not give approval to their relationship, police claimed.