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Matthew Koma pokes fun at Adam Levine cheating drama in birthday post for Hilary Duff

Maroon 5 frontman Adam hit headlines last week when budding Instagram model Sumner Stroh alleged she'd enjoyed a fling with the married rocker, and shared some of his flirty messages online as evidence. More women came forward with their own stories of Adam, who's currently expecting baby number three with his model wife Behati Prinsloo, messaging them. Taking aim at Adam's pickup lines, singer-songwriter and producer Matthew directly quoted some of his words to Sumner as he wished Hilary a happy 35th birthday.

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