misery acquaints a man with strange bedfellows

The phrase "misery acquaints a man with strange bedfellows" means that when a person is in a state of extreme unhappiness or suffering, they may find themselves forming alliances or associations with unlikely or unconventional individuals. In times of despair, people might overlook differences or personal disagreements and seek solace or support from those they wouldn't usually associate with, simply because they are all going through the same hardship.