(Cover) - EN Showbiz - Demi Moore and Ashton Kutcher have reportedly been living separate lives.

The news comes after it was alleged that the new Two and a Half Men star cheated on his wife with a 23-year-old woman on their six-year-anniversary.

TheDirty.com claims that the 33-year-old actor had a booze-filled night out in San Diego with friends last Friday when he met blonde student Sara Leal.

They claim that the actor had intimate relations with her at the nearby Hard Rock Hotel where he told Leal that he and his wife were "separated, but the public just didn't know yet".

Star magazine is reporting that the Demi, 48, and Ashton have been having trouble in their marriage for a long time and have finally given up on their relationship.

"Demi's finally ready to move on after all these years because she's sick of feeling like she can't trust Ashton," an insider told the publication.

"Especially as his star continues to rise with Two and a Half Men, he's become really vague about where and with whom he spends his time.

"Ashton was a serial cheater, and Demi just couldn't take it anymore. She didn't deserve to live that way. It's a painful time for Demi.

"It was definitely a long time coming, but they're finally done for good."

The pair had apparently struggled with the pressure of their 15-year age difference for a while.

Demi was previously married to actor Bruce Willis but they divorced in 2000 after 13 years of marriage. They have three children together; Rumer, 23, Scout, 20, and Tallulah, 17. (C) Cover Media