The Australian former Neighbours star looked to be settling into LA life by popping out for an iced coffee at the coffee chain.
The previous day, Delta and Nick had a date in Downtown LA, where they had tickets to watch the musical Les Miserables at the Walt Disney Concert Hall.
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| The look of love: As Nick Jonas looked back at Delta while performing, he gave her loving eyes too |
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| I love you this much! Nick was performing at a park in Century City in Los Angeles |
But as they enjoyed a pre-theatre meal with friends, their age gap proved a problem when Delta ordered a cocktail and poor under-age Nick had to sip on an iced tea instead.
The legal drinking age in the US is 21, so the couple will have to wait over two years before they can legally go out for an alcoholic beverage together.
But at least Delta will have a designated driver for the foreseeable future if she continues to date the younger man.
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| Doting girlfriend: The Australian singer sat in the park as the sun set during her boyfriend's concert |
Earlier in the week the pair were spotted sharing a kiss and a hug as Delta arrived at Los Angeles International Airport.
Their romance came after Delta announced her split from former Westlife star Brian McFadden on April 1.
By the end of May, she and Nick were spotted holding hands and going for a bite to eat having just returned from a tropical holiday in Bali.
Her teenage lover has his own band Nick Jonas and the Administration, while Delta is famed for her hit singles such as Lost Without You and Innocent Eyes.
Happy and relaxed: Delta looked serene as she walked around in the sun
