brookem230WM.jpgBrooke Mueller has been hard at work on her reality show with Paris Hilton, however the mom of two has been disappointed lately with Charlie Sheen ... the dad of her 1-year-old twin boys, Max and Bob.

A source tells X17online that Brooke has been telling friends Charlie hasn't visited the twins in four weeks.

The couple, who filed for divorce last November, tied the knot back in 2008. Following a fight on Christmas Day 2009, the couple began living apart. The two have since been in and out of rehab, with Sheen being placed on probation and forced to undergo domestic violence counseling.

As for details involving their divorce, Charlie and Brooke are both receiving legal custody of the two young boys. However, Brooke maintains primary physical custody.

This past October, Sheen was accused of assaulting porn star Capri Anderson at a NY hotel, but has since been cleared of his involvement.

Brooke's mom, Moira Fiore, has recently admitted, "She (Brooke) seems ready to give it another try. Charlie’s been telling her that things have not gone well for him is because they broke up. I think he’s making her feel guilty and he wants to be with Brooke.”