Caged (2011) on Netflix

Plot summary

Stella is a married woman who has held her desires down for years. She decides she can no longer ignore them, and she begins a secret double life. She visits sex clubs and erotic parties. Single women who live that hedonistic way are nicknamed unicorns, and Stella becomes one of them. The new attention she receives makes her flourish. Then her husband discovers the secret life she has been leading. He gives her the freedom that she says she needs, and he hopes that it is only a phase.