Justin Bieber and Selena Gomez
National Photo Group
04/18/2012 AT 05:45 AM EDT
Young love in South Florida!
joined boyfriend Justin Bieber
at a jam-packed event for his Pencils of Promise Charity at St. Andrews School in Boca Raton. The charitable organization builds schools for the underprivileged around the world, and Bieber stopped by to congratulate several students on their great fundraising efforts.
"When Justin wasn’t interacting with the group, he and Selena were behind [the] stage and in the backyard area making out," an eyewitness source tells PEOPLE. "It was amazing to see a young couple so much in love."
While in town, the two also the couple
stopped by the oceanfront Breakers hotel in Palm Beach – then headed over to nearby Jupiter, Fla., for a private event. – Linda Marx