Troubled stars must have each other's backs!

Charlie Sheen reportedly wrote an $100,000 check to Lindsay Lohan so that the Liz & Dick actress could pay off her tax debt, and the Anger Management star did it all out of the goodness of his own heart!

The two became friends after bonding on the set of Scary Movie 5 back in September, and during that time Lilo revealed to the infamous Hollywood bad boy that she was dealing with ongoing tax problems, which is when Charlie offered to help bail her out of $233,904 in unpaid taxes from 2009 and 2010.

Although our favorite redhead politely refused his good gesture, the former Two and a Half Men star went ahead and ponied up the cash anyway. The Mean Girls star's business manager received a huge check in the mail last week, and the actress was so blown away by Mr. Sheen's generosity that she immediately put the money to good use and paid the IRS.