Demi Lovato & Joe Jonas Team Up For Secret VS Project in St. Bart's: Photo 3532387, Demi Lovato, Joe Jonas, Wilmer Valderrama Photos

Photos for: Demi Lovato changes out her mic pack while soundchecking for an exclusive concert with Victoria

Demi Lovato & Joe Jonas Are Doing 'Something Big' With Victoria's Secret!: Photo 906878, Demi Lovato, Joe Jonas, Wilmer Valderrama Pictures

Demi Lovato & Joe Jonas Team Up For Secret VS Project in St. Bart's: Photo 3532393, Demi Lovato, Joe Jonas, Wilmer Valderrama Photos

Demi Lovato & Joe Jonas Team Up For Secret VS Project in St. Bart's: Photo 3532393, Demi Lovato, Joe Jonas, Wilmer Valderrama Photos

Demi Lovato and Joe Jonas Fans Are Shipping Them Again On Instagram

Joe Jonas Says He's Accidentally Gone to Gay Clubs Before: Photo 3515720, 2015 American Music Awards, American Music Awards, Demi Lovato, Joe Jonas, Nick Jonas, Wilmer Valderrama Photos

Demi Lovato's exes Joe Jonas and Wilmer Valderrama show no bad blood

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Demi Lovato & Joe Jonas Team Up For Secret VS Project in St. Bart's: Photo 3532393, Demi Lovato, Joe Jonas, Wilmer Valderrama Photos

Demi Lovato's Exes Joe Jonas and Valderrama Spotted Hanging Out

Demi Lovato Says Wilmer Valderrama Had 'Hesitations' About Their Relationship: Photo 3551868, Joe Jonas, Nick Jonas, Wilmer Valderrama Photos

Demi Lovato & Joe Jonas Team Up For Secret VS Project in St. Bart's: Photo 3532390, Demi Lovato, Joe Jonas, Wilmer Valderrama Photos

Demi Lovato & Joe Jonas Team Up For Secret VS Project in St. Bart's: Photo 3532388, Demi Lovato, Joe Jonas, Wilmer Valderrama Photos

Demi Lovato Celebrates Three Years Sober With Boyfriend Wilmer Valderrama—And Ex Beau Joe Jonas!