Who is the girl in OLLG?

The girl in "One Less Lonely Girl" (OLLG) music video by Justin Bieber is a character who represents the romantic interest in the song. In the video, she is portrayed as someone who is initially sad but finds joy and connection with Bieber's character. The song conveys a message of love and reassurance, suggesting that the girl is no longer alone. The identity of the actress varies in different performances and interpretations of the song.