Article continues below advertisementRomeo Beckham is seemingly hung up on his ex.The 23-year-old gushed over former girlfriend Kim Turnbull, 24, after she shared a sultry bikini snap.Beckham took to the comments of Turnbull's Instagram post to express his renewed interest.Article continues below advertisementSource: @kim_turnbull/InstagramKim Turnbull stunned in a skimpy bikini.The DJ spilled out of a tiny blue bikini while lounging in Bali, Indonesia. In a different photo, she leaned over a counter and snapped a mirror selfie, donned in an army-green two-piece and a sideways camouflage cap.