Tribal men steal wives

In the Wodaabe tribe of Niger in West Africa, men are known to steal each other's wives. The Wodaabe's first marriage is arranged by their parents in infancy and must be between cousins of the same lineage. However, at the yearly Gerewol Festival, Wodaabe men wear elaborate makeup and costumes and dance to impress the women – and hopefully steal a new wife.
If the new couple is able to steal away undetected (especially from a current husband who may not want to part with his wife), then they become socially recognized. These subsequent marriages are called love marriages.