Cousins is a 1989 remake of a French film (Cousin, cousine 1975 directed by Jean-Charles Tacchella), with Ted Danson, Isabella Rossellini, Sean Young, William Petersen, Lloyd Bridges, and Keith Coogan.
Larry Kozinski (Danson) and Maria Hardy (Rossellini) meet at the marriage of Larry's uncle Phil and Maria's mother Edie (Aleandro). Newly made cousins-by-marriage, they find they have more in common than expected as their respective spouses, insecure Tish (Young) and boorish Tom (Petersen) begin an affair. Over a series of ritualized family events, dreamer Larry and repressed Maria decide to exact revenge on their spouses by pretending to have an affair themselves. Their good-natured plan takes on unexpected gravity when they learn not only are they great friends, but they realize they're falling in love with each other.
They consummate the affair, but the ramifications shake their families, including Larry's artistic son Mitch (Coogan) and Maria's adorable but aggressive daughter Chloe (Isabelle). They end the affair to bring stability back into their families' lives. Meanwhile, (after the sudden death of Uncle Phil), Larry's father Vince (Bridges) becomes interested in his widowed