Fidelity (Russian: Верность, romanized: Vernost, also marketed as Infidelity)[4] is a 2019 Russian erotic drama film directed by Nigina Sayfullaeva, and starring Yevgenia Gromova, Aleksandr Pal, Marina Vasileva and Alexey Agranovich.

Lena now believes her husband is cheating on her after reading a text message from Katya, Sergei's co-actor.

Unexpectedly, a new universe opens up for her, full of passion and amazing feelings, which she uses to express her emotional state.

She is portrayed as a woman in an unfulfilling marriage, who begins an uncontrollable double life of adulterous affairs.

"Fidelity" was shown at the 30th Open Russian Film Festival as part of the "Main Competition Program", where it received a "Special Jury Diploma" with the words "for the boundless faith of the actors in the director.