Then she reached out to hold Ellen's hand, saying: 'I want to Ruin The Friendship with you.' explaining to the confused host, 'it's a good thing it means I'm secretly in love with you.'Ellen one upped Jimmy, who gave the star a gift of her favorite pickles, by bringing on a huge jar of the cucumbers - much to Demi's delight.
The singer briefly dated Nick's older brother Joe, 28, after first meeting the group when they co-starred in the 2008 Disney Channel movie, Camp Rock.
Demi also toured with Nick in their Future Now show in 2016, but has always maintained they are just good friends, in spite of her lyrics suggesting otherwise.
Meanwhile, Nick was spotted heading to MTV's TRL Show on Wednesday.
Demi Moore, 55, sure likes her men young and she’s proving that once again by hooking up with Nick Jonas, 25, according to Radar Online.
While J-Lo worked an ivory halterneck style by Sass & Bide, Olivia wore this super sparkly number by Elie Saab.