Breslin and Clifford's short-lived romance reportedly didn't end well, as evidenced by her recent debut song "You Suck" -- which if you're judging by the pointed lyrics, is definitely about the 5 Seconds of Summer star.
"I said you sound like All Time Low/You really don't even though you try hard," she sings.
And it gets worse.
"I hate the scar above your eye/It looks like you're on drugs," she continues in a following verse. "And you really need to learn to wash your hair/Overall, you're not a catch/You're just a dumbass/Bleaching your hair/Well, I hope it all falls out."