The heart wants what it wants – and for Selena Gomezon her 29th birthday, she wanted her BFFs by her side.

On her special day on July 22nd, the “Who Says” singer was surrounded by loved ones at an intimate backyard party. “Selena was holding a poolside BBQ party at her house with her closest friends and a few family members today,” a source told E! News. “It was really low key, but she was excited to bring everyone together to celebrate her 29th birthday.”

At the party, “everyone had fun jumping into the pool and going down the huge water slide that they rented,” the insider continues. “There were balloons, pool toys and pink and white decorations everywhere that said ’29’, ‘Selena So Fine’ and ‘HBD Selena’ had a huge smile on her face.”

Later everyone raised their glasses – mostly filled with margaritas and rosé – for a celebratory toast to Gomez. The insider adds, “She kept telling her friends how happy and grateful she was for them and was really grateful.”