08/31/2009 at 01:00 AM EDT
Former child stars Melissa Joan Hart and Soleil Moon Frye have known each other "pretty much our whole lives—we met when we were 5 or 6, on a movie," says Hart. Since then, they've gone from girls "riding our scooters down the street," says Frye, to teens hanging out in Manhattan. "We'd take long walks and drink lots of coffee." There was even a time when "we tried to be wild" by hitting up nightclubs, Frye says, before adding with a laugh, "It's a little different now!" The reason for the change? Hart's sons (Mason, 3½, and Braydon, 17 months) and Frye's daughters (Poet, 4, and Jagger, 17 months), who get together for L.A. playdates—over organic lollipops!—at either Hart's candy store SweetHarts or Frye's children's boutique The Little Seed. "We're lucky both Poet and Mason have younger siblings," says Frye, 33. "When they play together with other children, they know to be nice to each other." Uh . . . sometimes. "There's accidental whacking each other in the head with toys," says Hart, 33. Then there's Mason's crush on Poet. "He tries to love on her, but she's like, 'Go away!'" says Hart. But Frye predicts the kids will get past their differences: "Jagger and Braydon already like each other. And Poet's falling in love with Mason eventually."
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