Watch Demi Lovato and Nick Jonas perform two songs together at her concert in Los Angeles last night.
Demi looked hot in black leather and a fringed jacket, as she belted out her hits at the Greek Theatre in LA.
One of the highlights of the show was when Demi invited Nick on stage to play guitar and sing Catch Me and Don't Forget.
She introduced Nick as one of her greatest friends, too... awww!
After the duet performance, Nick tweeted: "What a special night being able to sing with my friend @ddlovato once again."
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