new couple The Hills kiss kissing loveAvril Lavigne and Brody Jenner are heating things up. The duo have been inseparable lately, and a source close to the couple tells X17online exclusively:

    "He's totally into her. That's kind of surprising because Avril is totally not his type. But it's definitely not a publicity stunt."

As for why this unlikely duo have hit it off, our source adds, "She's not high maintenance so he can be chill and not deal with a playmate kind of girl." X17online has learned that Brody has already taken Avril to meet his stepdad, music producer David Foster, and "she fits right in."

Brody recently ended his 15-month relationship with Playboy playmate and The Hills hottie, Jayde Nicole. As for his playmate ex, "Everyone agrees that Jayde was a total nightmare."

We'll see if Brody turns out to be the perfect Sk8er Boi that Avril's been searching for.

Check out the gallery below to see X17online's first pix of Avril and Brody making out!