Misery acquaints a man with strange bedfellows., The New Dictionary of Cultural Literacy, Third Edition, E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil, editors, Houghton Mifflin Company, 2002.
You refer to two things or people as bedfellows when they have become associated or related in some way. Sex and death are strange bedfellows. strange bedfellows two or more people, ideas etc that are related or working together in an unexpected way