What had happened to the time we had
I thought you said you won't ever
You’ll never leave me
What happened to us? (i want to try)

from Toro Y Moi – So Many Details Lyrics on Rap Genius

Meaning

In what proves to be a sad situation, his girlfriend leaves him despite her promises of being there forever. Chaz knows that they used to have so many good times together and built so many memories together — so what happened to us?
It’s also worth noting that the girl in the background says:

“I know I promised to wait so much longer than you, I really did try.”

Which, by the tone of her voice, sounds like the typical break-up mumbo-jumbo the best of us guys gets from girls who lose interest and move on to another. Maybe Chaz should recognize this and move on, instead of trying to hold on.

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