Lyrics include, "You just want attention, you don't want my heart..." and after you see the video, you'll know for sure that it's directed at Bella.
Daammn.
But, in standard Bella Thorne fashion, she didn't really care about the resemblance. Instead, she Snapchatted a video of herself singing along to the tune, with the caption "When you don't know the name but it's a banger."
Hmmm.
See it here: