Bridgit Mendler and Shane Harper quietly revealed they had broken up last November, when the Good Luck Charlie actress revealed that she was single. While they've never talked candidly about their split, the singer recently opened up about the heartbreak that inspired her new single, "Atlantis."

"I was overwhelmed by emotional numbness, like a whole city overcome by waves, and dumped into the ocean. After being in love for so long, it was scary and confusing to deal with the loss of that feeling. This song was written at a moment when I was sorting through these emotions and expectantly looking towards the future," she told Pigeons and Planes.

On Twitter, Bridgit explained that her breakup inspired the track, writing, "Atlantis is a beautiful city that disappeared and was forgotten underwater. That is what it feels like to me to lose a first love. In the story, a remnant of that love is still haunting me even though it is 'asleep with the fishes.'"

Since Bridgit and Shane dated for years, it's no surprise that she suffered a deep feeling of loss when they split.

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Click through the gallery to see more photos of Bridgit and Shane.

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