Nobody was expecting Justin Bieber of all people to show up at SXSW this year, but he showed up, performed and kissed up to Selena Gomez all at the same time.

Bieber's acoustic set featured "Boyfriend" and "As Long as You Love Me," which he dedicated to Selena. Bieber jumped into a cover of 'Suit & Tie' from Jay Z and JT.

He told the crowd, "this next song goes out to my baby," before starting to sing. Selena was in the audience with a big smile on her face.

SXSW is traditionally a showcase for new artists and the crowd isn't usually very receptive to the poptart artists like Bieber.  The fans didn't seem to mind though as Biebs performed at the festival.  Check out the two songs below.