The big news out of Hollywood this past weekend is that Ashton Kutcher and Demi Moore went to a Los Angeles Kaballah center.  It's the first time seen in public together since rumors about a breakup began swirling around.  Now we may know the real reason, according to the New York Post apparently Ashton was cheating on Demi.  Now that Ashton Kutcher is on 'Two and a Half Men' is he following in Charlie Sheen's shoes?

There are reports that Kutcher was boozing it up nude in a hot tub with 4 other naked girls in a San Diego hotel.

One of the women hanging out with Ashton was Sara Leal 23, the same woman he is alleged to have had sex with in the room after a private party.

According to Jacques Du Toit, boyfriend of one of the girls in the tub.

Alexis told me Ashton’s room number and when I got there, a bodyguard was at the door who said it was a private party.  I said I was the boyfriend of one of the girls and was let in.   I found Ashton in a hot tub on the balcony with Alexis, Sara, a girl called Katie and another girl called Marta. They were all naked.

Ashton invited Jacques to join them in the tub -

The Post is reporting that the sexual encounter took place after everyone except Leal and her friend Marta had left.

A friend of the girls said

Sara is telling everyone 100 percent that she and Ashton had sex, Jacques and Alexis are two of my best friends and Sara is a good friend. If she says she slept with him then I think she’s telling the truth.

Ashton has denied all rumors on his Twitter by tweeting

"When you ASSUME to know that which you know nothing of you make an ASS out of U and ME.”

However when rumors first surfaced - Sara Leal's Facebook page suddenly disappeared too!