United Kingdom, March 20 -- Olivia Rodrigo is "so happy" for Sabrina Carpenter's successes amid rumours of the pair being in a love triangle with Joshua Bassett.

It was rumoured that Olivia's 2021 heartbreak track Drivers License was about her High School Musical: The Musical: The Series costar Joshua, 25, and when he was later spotted with Sabrina, people speculated if "that blonde girl" lyric in Olivia's song referenced Sabrina.

And when the latter released Skin a few weeks later, it sparked rumours that the song was a response to Drivers License because of the lyrics "maybe you didn't mean it/maybe blonde was the only rhyme" and "I wish you knew that even you can't get under my skin if I don't let you in".

But Olivia, 23, has quashe...