He cheated on the singer

The always depressed sounding singer and her much much much older boyfriend split.

Much like he does with all of the women he dates, he cheated on the singer.

I also think that perhaps the foreign born model/bad actress who tried to hit on her and failed, may have put an idea or two in her head about future dating prospects.

Billie Eilish

Jesse Rutherford

Cara Delevingne

Billie Eilish and Jesse Rutherford break up after less than a year of dating

Billie Eilish and Jesse Rutherford have called it quits, Page Six can confirm.

“We can confirm Billie and Jesse did split amicably and remain good friends,” the “Bad Guy” singer’s rep tells Page Six Wednesday.

Eilish, 21, and Rutherford, 31, have not been seen together since Coachella in April.

The former couple were seen keeping a low profile at the music festival in Indio, Calif.

Eilish then attended the Met Gala in May without Rutherford. – Source