Вотта! Посяму они рассталися
They were together for four years and the poor guy was pretty heartbroken. she cheated on him while he was away on tour. And got custody of their cats, Simon and Marzipan.
If she was kicking herself for breaking up with him before they became huge, she'd be doing it for all the wrong reasons. If the relationship is at a stage where she's more interested in other people, then it's better they break up than have her leading the poor kid on, thinking everything is fine.
He deserves better than that.