Are Halsey and Yungblud back together? That's what fans want to know after the "Bad At Love" singer's ex-boyfriend left a spicy comment on her mind-blowing twerk video on Monday. The 25-year-old made her followers melt after she showcased her booty popping skills while wearing nothing but a revealing bra and the smallest shorts imaginable. Dancing to Kehlani's new hit, "Toxic," the hitmaker left everyone mesmerized when she turned her back to the camera, bent down and began twerking. Taking her hotness up a notch, Halsey performed in front of a blue light that added plenty of sex appeal.