"Ariana's brother Frankie and her mom are so happy for her. They think Dalton really balances Ariana out and allows her to be her true self," the source told ET. "Ariana appreciates that Dalton accepts her and loves her for who she is. He's a little nerdy and hardworking and she loves that about him. He's also very protective over her and goes above and beyond to make her happy."
ET confirmed the couple held the "extremely small and intimate" ceremony at Grande's home in Montecito, California with only their very close family and friends in attendance.
"The couple wanted the ceremony to be private and took precautions to make sure that happened," another ET source shared. "The ceremony started in the afternoon and went into the night."
The source added that the newly-married couple is "ecstatic and looks forward to their future together.”