“Sam and Brandon had a real whirlwind romance. They really fell for each other. But they are both so busy with their careers and unfortunately things just haven’t worked out,” a source tells the Sun. “Sam is obviously devastated. This is the most significant relationship he has ever had.”
The pair started dating publicly back in November, meaning their relationship had a 9 month arc before fizzling out. That’s not so bad, considering how short celebrity relationships tend to be (like when Kris Humphries and Kim Kardashian divorced after 72 days).