It's official, Orlando Bloom and Katy Perry are dating

Orlando Bloom and Katy Perry have been virtually inseparable since getting cosy at a Golden Globe's after Party. Photo / Getty

Orlando Bloom is "officially" Katy Perry's boyfriend.

The E.T hitmaker - who was first romantically linked with the Lord of The Rings star during this year's Golden Globes - has reportedly confided in pals that she and the British actor are in a relationship following a string of dates.

A source close to the source said: "They seem to be getting serious and are an official couple. She calls him her boyfriend.

"Katy likes how down to earth Orlando is."

The couple were spotted kissing and cosying up whilst the sun set during their holiday at the San Ysidro Ranch in Santa Barbara, California, on Sunday.

Speaking exclusively to E! News a source said: "They looked very loved up and were paying more attention to each other than the view."

The official title to their relationship comes as no surprise following recent news that Katy, 31, and 39-year-old Orlando - who has five-year-old son Flynn with ex-wife Miranda Kerr - have keys to one another's homes.

A source said: "They've barely been apart for weeks, so Orlando figured he should officially give Katy a key to his apartment so she can come over whenever.

"She was thrilled and offered him one to her place on the other side of LA too.

"They spend most nights at his place and practically live together but the holiday cemented things between them. Now she's happier than ever."

- Bang! Showbiz