Willis saw Demi's health dwindling and, according to sources, tried to convince her to take care of herself:
"He was worried about her and wanted her to get better," a source tells People. "Many of her friends did the same thing, but she just wouldn't listen."
Two of Willis' children with Demi, Rumer and Tallulah, have been staying with him while their mother gets treatment. Moore has been especially close to Rumer since she and Bruce split.
"It's hard for Ru right now to see her mom in this situation," another source adds.
Meanwhile, Ashton stopped by Demi's house yesterday, where the two reportedly prayed together.
"This has been a very hard time for Ashton. He loves Demi very much, and he feels absolutely helpless right now," a source close to the situation tells RadarOnline.com. "Ashton and Demi have been praying together at her house, and he mainly just wants to provide comfort to her right now."
But don't get any ideas.
“This absolutely isn't a reconciliation, but there is still a lot of love there and he would never turn his back on her -- it's just not who Ashton is."
The source continues:
"Ashton has had loved ones in his life that have dealt with addiction issues, and he realizes that it's counter-productive for someone to be forced to go to rehab. Ashton knows the addict has to want to get help for themselves. There is a lot of noise around Demi right now, and Ashton wants her to know he is there for her and supports her no matter what."