It's pretty safe to assume at this point that Jelena are totally back on.

On Wednesday (September 17), Justin Bieber posted this adorable shot of him and Selena Gomez at his friend, Ryan Butler's birthday celebration, which reportedly was held at Lucky Strike bowling alley in downtown Los Angeles on September 14.

In the shot, which is captioned "Hope u had a good bday @ryanbutler," the cute couple look beyond happy, as Selena, who has her adorable new bangs pulled back, smiles and stares at Justin, while he sports a giant grin.

The on-again-off-again duo have been spending quite a bit of time together as of late. The two were spotted walking together in Las Vegas over the weekend as they were in town for the Floyd Mayweather boxing match.

Late last month, the "Confident" singer, who's working on a duets album with Cody Simpson, took his lady love to his home country of Canada, where they snapped selfies, rode horses and got into a little bit of trouble on an ATV.