Justin Bieber and Selena Gomez in cuddly Instagram selfie

JUSTIN Bieber and Selena Gomez, the world’s most on-again, off-again couple, appear to be definitely back on. For this week, anyway.

Recently they’ve kept us guessing, sneaking into an LA burger joint for a date, posting pics to Instagram (and then just as quickly deleting them). But now it seems the Biebs is ready to declare his everlasting love. Sort of. The singer posted another pic of he and Gomez doing their best vacant stares to camera, and left it online (surely an acknowledgment that the relationship is serious).

Confirming the speculation, the duo was spotted arriving in Bieber’s native Canada via private jet from LA, where fans quickly shared videos of the two at the airport.

Sources close to the couple told Us Weekly that the pair are hanging out again.

“They are doing what they are doing,” one source told the mag. “She doesn’t care, she doesn’t define it.”