The actor, still going through a divorce with Demi Moore, has taken Kunis to a five-star resort on Bali's southern peninsula. Suites include wooden four-poster beds, a sunken indoor bathtub and ultra-private pools. Sources tell us the pair, who met 14 years ago while starring on "That '70s Show" together, are now making no secret of their romance despite earlier attempts to stay out of the public eye.

One source said, "Ashton was Mila's first kiss while on 'That '70s Show,' so they've always had a special bond. They started dating in the spring, and things have recently become more serious."