For Mandy Moore, being married to Ryan Adams was not always a picnic.
One day after the singer, 43, went on a Twitter spree where he said he could not remember having married Moore, 34, a source tells PEOPLE that Adams' previous behavior made his marriage out "impossible"
"Ryan could be terrible for Mandy when they got married," says the source of the former couple, who married in 2009, before announcing their separation six years later.
"Yes, there were some good times, but there were a lot of problems. He despised her constantly. And he was selfish and did everything related to him, "the source explains, adding that the We are The star "tried so hard to be a good wife and a good friend, but he made it impossible".
A representative of Adams had no comments.
"She did not deserve it," say the experts, before adding that Moore, who is now engaged to Taylor Goldsmith, is gone.
"Everything happened the way it was supposed to and now he's really happy. Taylor is the perfect person for her and does not even care about her past with Ryan. She has gone happily, "shares the source.
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After the actress opened on her divorce in the November issue of Glamor, commenting that she "did not choose the right person", Adams posted a series of Twitter messages that have already been deleted.
"She did not like the Melvins or BladeRunner." From the beginning, condemned, "he wrote, before stating that he was allegedly using drugs so intensely that he did not remember his 2009 wedding.
"When someone told me we were married, I thought they were joking," he said. "Then I realized how many painkillers I was taking in. Honestly, there was not enough to numb the impact, Gollygooops."
To make matters worse, Adams compared his marriage to Moore with "being stuck to the spiritual equivalent of a piece of soaked cardboard."
The comment echoed a comment that Moore had made to Glamor that she felt "spiritually and fundamentally trapped" before their separation.
RELATED: Mandy Moore felt "stuck spiritually and fundamentally" before the divorce: "I do not blame myself"
Later that night, Adams apologized for his comments.
"I apologize for my observations, I was trying to be funny, but I have and I will always choose to remember the incredible moments, it's not elegant or it's good to diminish what it was, I'm happy for everyone and doing the best I can," he wrote.
RELATED: Mandy Moore opens to move on after a painful divorce: "I feel much lighter"
Moore previously opened up about her past with her ex-husband, often finding the good in a painful situation.
"My story was diverted in a different direction than I had expected," he told People previously of their separation. "But ultimately, life is about being happy and fulfilling, and sometimes that means making difficult decisions."
"I could not pay for him to return five or ten years ago," he continued. "Having gone through trials and tribulations has brought me to this place today. I feel much lighter. And I'm becoming the best version of myself. "
After six years of marriage, Moore and Adams announced their separation in January 2015. A little over a year later, the couple ended their divorce in June 2016.