Hayes Grier may be totally single now, but that wasn't always the case! The web celeb used to date a girl named Jordan Griffis, and it looks like maybe they're not on good terms anymore. She was aghast that he's hanging out with Justin Bieber at his 22nd birthday party, and then they started throwing shade at each other.
Click through the gallery to see their tweets at each other.
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It started when she tweeted that she'll never understand why Hayes gets to hang out with Justin.
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She says that Hayes is "not worthy" of the honor.
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He reportedly tweeted and deleted a response, saying, “Why are you talking [crap]? Thought I got rid of that YEARS ago.”
What he didn't delete? Even more shady comments.
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Hayes shadily said that he needs to stop wasting time.
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He also hinted that his ex-girlfriend should "tame [her] thirst."
Ouch! It seems like they're not getting back together ever again…
Can you believe their fight? Sound off in the comments below!