With no luck in reaching a custody settlement over the weekend, Charlie Sheen and Brooke Mueller will battle it out in court on Tuesday. Sources tell TMZ that several issues stood in the way of an agreement.  Mueller insists that a monitor is present whenever Sheen has the twins, Max and Bob, at his house.  And she wants to make sure that any current or future partner Sheen has doesn’t have the right to “exercise parental responsibilities.” In order for the estranged couple to gear up for the court fight, Sheen’s lawyer must contact Mueller’s lawyer on Monday.

What should you tell your kids during a custody fight?

Cupid’s Advice:

When you’re in court fighting over your children, it can be tough on them. Cupid has some things you can tell them during the battle:

1. Positive image: No matter how much you dislike your ex-spouse, never trash him or her in front of your kids. Your children should have a positive image of you both, and not be swayed by any conflict.

2. No one’s fault: Let them know that it’s not their fault and has nothing to do with them.

3. Spending time: Let them know that by getting a divorce, it won’t change the fact that you will always be their mother or father. Things will be mostly the same, except you all won’t spend time together as much.