To understand this, you'll have to read the description.
Most of you might know that Ryder was engaged in his mid-20's, and that his fiance died during childbirth. (The baby died slightly afterwards as well.)
It happened while he was deployed, and he didn't get wind of it right away. But his mother, Helena, dropped everything as soon as she heard, left Germany and went to his home in the U.S. in time to meet him by the door. Of course, he was excited that she was there and he was eager to finally meet his newborn daughter, but... They weren't there. It nearly broke Helena's heart to see him collapse in disbelief and shock as she told him, and she could barely keep herself from crying as she saw him in tears in a way she'd never seen before.
She stayed with him. She couldn't possibly leave - he couldn't take care of himself anymore. He was destroyed, couldn't get out of bed in the morning. At that point, she was the only thing that kept him from surrendering to alcohol or putting a bullet in his own head...
But he did try to take his life. When she was out, he took some pills - a lot of them. He couldn't just shoot himself - couldn't let his mother come home to see something like that.
She found him on the couch once she got home, but he was still alive and she got him to the hospital in time.
After seeing how devastated his mother was when he finally woke up, he just couldn't let himself try that again, even though he no longer had a will to live.
After a somewhat long while, he was able to live on his own, but he'd never be the same again.
It left him cold, more isolated than ever. He would appear emotionless to most people - never smiling, never crying... Just that tint of anger built up after all the years of depression.