"Too Little, Too Late" and "I'm Not Missing You" are two of the BEST pop songs so far this year, but wut are you saying that this song has already lost steam?! It has yet to take off? I haven't heard it once on the radio.
It's mediocre at best; the biggest problem being its understated production. Especially during the chorus, when it should explode into something with resonance, it falls way too flat. The same goes for her vocals. After all, she shouldn't be conveying indifference in a song titled "I'm Not Missing You"---a reprisal of the sassy punch that "Stuck" packed would've been appropriate.
Swing and a miss! Rush the second single, girlfriend.