Justin Bieber shared a quick smooch with girlfriend Selena Gomez at the backstage of 'Billboard Awards'.
The couple was caught in the act by Taylor Swift.
A backstage camera, which filmed the kissing scene, shows Swift sticking her tongue out in response to the quick kiss, the Sun reported.
The 'Beauty and a Beat' singer seemed unhappy to be shot by the TV crew and ordered his security guards to block the camera.
Bieber was honored with three awards at the event that was hosted by the US music magazine to pay credit to the top artists.
