to cry one's heart out
inconsolable
cry one's eyes out
heartbroken
Empty seats, once filled with laughter, now only echo loneliness.
Time Heals All Wounds, But Time Also Forgets.
Tears, they're just a river that flows when words won't come.
Loneliness is a thousand little knives, piercing your soul.
这些句子能够较好地表达出“伤心欲绝”的情感，你可以根据具体的语境选择合适的句子来表达你的感受。
