The pair reportedly split “within the last few days” after spending a short time apart while Katy was working in Europe. They were last seen enjoying a romantic meal together on Valentine’s Day in Los Angeles, before Katy, 29, jetted off to London to perform at the BAFTAs.
The musical twosome went public with their romance in August 2012 – one month after Katy’s divorce from Russell Brand was finalized. They had a brief breakup last March before reconciling.
Since then, the loved-up couple have appeared to be inseparable. Katy previously gushed about her 36-year-old singer/songwriter boyfriend, saying: “[It is] a rad, mature relationship… He’s just a fantastic partner. I’ve been a fan of his for such a long time. He’s got a brilliant, brilliant mind.”
They even released a song together this past December called “Who You Love,” along with a steamy music video.
Rumours had been swirling around the couple as of late after the pop songstress was spotted wearing a diamond ring on her engagement finger, though a source had denied the speculation as "not true."