Una Healy and David Haye looked as cosy as ever as they lounged on a beach in Costa Rica following the boxer's apparent confirmation of their throuple with Sian Osborne.The former Saturdays band member, who earlier this month celebrated her son's birthday with a party, is reportedly in a three-way relationship with the boxer, and has been spending a considerable amount of time with him on recent months. Una, 41, recently enjoyed a break away with David, 42, and the singer took to social media to share pictures and videos from the trip.