Kutcher and Kunis Get Cozy on 'Two and a Half Men' Set; Celebrate Mila's Birthday [PHOTOS]

Mila Kunis was seen on the set of "Two and a Half Men," starring Ashton Kutcher. Kutcher and Kunis have also been spotted getting cozy together while on vacation in Bali, supposedly to celebrate Mila's birthday, which is August 14. Although Kutcher and Kunis have yet to reveal their relationship publicly, sources report that the Hollywood stars are definitely more than friends.

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"'Mila and me :) I was so happy when I heard her and Ashton were together. They make such a cute couple! Looking forward to seeing her a lot on set this year!'" Stalker Sarah, a fan on Twitter known for her celebrity sightings posted on Saturday, according to the Daily Mail.

Sarah also posted separate photos of her posing with Kutcher and one with Kunis on Twitter.

Kutcher and Kunis were also spotted vacationing in Bali recently. The actors were reportedly housing in a five star resort complete with indoor tubs and private pools at the southern end of the island, according to the New York Post.

Proof of the couple's relationship came about in July when photos of them kissing at an LA wrap party surfaced.

"They were seated on a couch on the same side of the table and Mila was running her hands through Ashton's hair," a source told Us Weekly about the party at the LA Soho House.

"She had her elbow resting on his back and couldn't stop playing with his hair and rubbing his shoulders. He leaned in and whispered to her and kissed her cheek. They were holding hands," the source added.

Kutcher is currently going through a divorce with actress Demi Moore after 6 years of marriage after he was caught cheating with a much younger woman.

Moore was been rumored to have been heartbroken and experienced a breakdown after the breakup and was hospitalized for substance abuse, according to TMZ.

The 49-year-old actress is currently dating New Zealand actor Martin Henderson, who is 12 years younger than her. The couple attended the "Bourne Legacy" premier party in New York City on Monday.

Check out photos of the couple on the set of "Two and A Half Men."