Is pop star Justin Bieber reconciling with ex-girlfriend Selena Gomez?

On Sunday night, Bieber kicked off the music portion of South by Southwest early, dedicating "Boyfriend" to Gomez, who was backstage, The Associated Press reported. "This goes out to my baby girl," Bieber told a crowd of about 100 people at Banger's Sausage House & Beer Garden in Austin, Texas.

The surprise concert took place two days after the pair was seen behaving affectionately at a restaurant in McAllen, Texas.

"Selena Gomez and Justin Bieber came in with his bodyguards a little after 10:30 in the morning for breakfast and were here for an hour and a half," Lori Johnson, manager of Don Pepe's Mexican Restaurant, told People magazine.

"They were kissing," Johnson told People. "They were sitting next to each other hugging and kissing in front of the staff. They weren't hiding it and seemed to be boyfriend and girlfriend."

Meanwhile, Bieber showed how Gomez was still on his mind during a deposition last Thursday in Miami, in relation to a lawsuit filed by a photographer alleging he was beaten by one of the singer's bodyguards.

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In videotaped excerpts posted by TMZ.com, the photographer's attorney asks, "Sir, have you ever talked with Selena Gomez and discussed your feelings about paparazzi?" Bieber gave a long sigh before replying, "Don't ask me about her again." He repeated the phrase over and over, wagging his finger, as the attorney attempted to get an answer. Bieber and his attorney then left, and upon return said they would answer no questions mentioning Gomez.

Bieber also hurled an obscenity at the court reporter and showed contempt toward the photographer's attorney.