You’ll have one less problem without him — that’s the advice Ariana Grande gave Andie MacDowell’s daughter Margaret Qualley, 24, after she began dating the pop star’s ex-fiancé, Pete Davidson. “Ariana felt it was her responsibility, as a feminist, of course, to warn Margaret about what she was getting herself into,” says a source close to the “Break Up With Your Girlfriend, I’m Bored” singer, 26, who called off her engagement to the comedian, 25, last October. “She got word to Margaret, through a mutual pal, that Pete’s an immature stoner who’d make fun of her on SNL after she eventually dumped him, too.”…
