NEW YORK — Adele's songs about breakups and heartache have made her a multi-Grammy award winner but she insists she's done with all that.

In an interview featured in the March issue of Vogue magazine, the 23-year-old says people think she's "miserable" because of her songs like "Someone like you" and "Rolling in the Deep." She also finds people are "surprised" when they meet her because she's not melancholy like her music. In fact, the singer vows to "never" write a breakup record again and adds she's "done being a bitter witch."

Adele has a lot to be happy about. She won six Grammy awards Sunday night, including record and album of the year. "21" was 2011's bestselling album.

The March issue of Vogue goes on sale Feb. 21.