Justin Timberlake has been busy filming Bad Teacher with his ex, Cameron Diaz – but he spent some quality time with his real life leading lady Jessica Biel this week.

The couple showed their love for Taylor Swift at the country star’s concert in L.A. Thursday night, popping backstage with a group of friends to greet the singer after the show.

Biel and a group of pals checked out Swift’s "T-Party" room, a backstage lounge set up with pillows, candles and food, while Timberlake had a long chat with Swift (who covered Timberlake’s "What Goes Around...Comes Around" in her set).

Other celebs on hand for the show included Kobe Bryant and family, Jennie Garth and her daughter, Master’s champ Phil Mickelson and Katy Perry, who sang a duet with Swift on Perry’s hit "Hot and Cold."

This was Timberlake and Biel’s second musical outing in as many days: The two were spotted at the Matt Morris show at L.A.’s the Mint on Wednesday night.