Kylie Jenner openly flirted with Tyga at Rihanna's Met Gala 2015 after-party last night (04.05.15).

The 17-year-old reality TV star, who has yet to comment on rumours she is dating the 25-year-old rapper, reportedly couldn't resist flaunting their relationship at the star-studded bash at Up & Down nightclub in New York City.

A source told E! News: ''There were no PDA moments at all, but they were definitely hanging out. Tyga and Kylie were flirting as it got later in the evening and everyone knew they were a couple.''

The 'Ayo' hitmaker - whose real name is Michael Ray Nguyen-Stevenson - and the 'Keeping Up with the Kardashians' star got their romance back on track last weekend after the rapper's ex-fiancée, Blac Chyna, claimed he was begging her to get back together with him for the sake of their two-year-old son, King Cairo.

The duo were spotted enjoying a picnic together in the grounds of California State University in Fullerton, California ahead of his concert there on Saturday night (02.05.15).

Tyga is now said to be thinking about offering Blac $500,000 to stop her from meddling in his new relationship.

Another insider recently said: ''He doesn't want her to do any more damage so he's offering her money to stop.

''He doesn't want to see any more texts or any more Instagram disses. He hates it, but he will pay her hundreds of thousands of dollars - half a million if he has to, to get her to chill out. It's the only thing that may work.''