Be Wanton and Tread No Shame (Spanish: Sé infiel y no mires con quién) is a 1985 Spanish comedy film directed and written by Fernando Trueba based on the play Move Over Mrs. Markham by Ray Cooney and John Chapman.

It stars Ana Belén, Carmen Maura, Antonio Resines, and Santiago Ramos.

Paco and Fernando, two partners in a small publishing company at a low ebb, seek to seal a deal with popular children literature writer Adela Mora by means of deceit.

When they are about the meet with the writer confusion about their extramarital affairs (and about those involving their wives, Carmen and Rosa) erupts.

[1][2] The screenplay is an adaptation of the play Move Over Mrs. Markham by Ray Cooney and John Chapman.