And the former Two and a Half Men star reached out to LiLo while they filmed Scary Movie 5 recently to give her a reported $100,000 to help out with her finances.
But now Charlie says that Lindsay didn't have the decency to say thank you for the money he gave her although he was happy to help and "pay it forward" as he described it.
"I'm still waiting for a text to say 'thank you,'" Charlie chuckled to Entertainment Tonight. "Anything, you know?"
But he wished the Liz & Dick star "the best" and said he thought Lindsay was a "very good and decent young lady that is just going through a lot."
"She just needs a little bit of time," Charlie added. "People need to give her time to get her s**t together."
Do you think Lindsay will ever get her act together?..