The New Rules singer and LANY lead singer were reported as reportedly broken up in January after five months of romance bliss.
The former couple acted alongside one another in the TV series Men in Trees and Aftermath. The two never married but ended their romantic relationship in January after more than 10 years together.
The Teen Mom 2 stars called it quits in January after a brief fling. "Our future just doesn't line up," Briana told Blasting News at the time.
"It was mutual," an insider told E! News exclusively about the demise of their five-year relationship. "Jack and Lena were growing apart and it just made sense for them to end their relationship where it was."