In ballet, when two dancers dance together it’s called a pas de deux.
Partnering requires strength from both dancers. A man may lift a woman high into the air, but the ballerina must keep her torso strong, otherwise the lift will not be successful. When partnered, a ballerina can do many more supported turns than she could by herself and can lift her leg higher and sustain her balance much longer.
A Grand Pas de Deux is often the culmination of a typical classical ballet, and the dance for a man and a woman follows a traditional sequence: the couple dances together, then the man dances a solo variation, followed by the woman’s solo variation. The Grand Pas de Deux finishes with a fast-paced coda or final dance.