同病相怜

⒈  比喻因遭遇同样的不幸而共相怜恤。

例同病相怜，同忧相救。——《吴越春秋》

英fellow sufferers have mutual sympathy; those who have the same illness sympathize with each other; adversity makes strange bedfellows; company in distress makes trouble less; fellow sufferers commiserate with each other;