In cities across China, there’s a special kind of consultant you can hire if you find out your spouse is cheating. They’re called “mistress dispellers,” and their job is to work their way into your spouse’s life, get close to their lover and convince the pair to break it off. When all goes according to plan, the cheaters end up believing it was their idea to end the affair.

In this episode of “Modern Love,” the filmmaker Elizabeth Lo tells Anna Martin what it was like to embed herself with a mistress dispeller over the course of three years. Lo explains some of the secrets to the mistress dispeller’s success, and why working on the project played a role in her own breakup.

Lo’s documentary “Mistress Dispeller” is in select theaters today.

Listener call out: The Modern Love team wants to know how differences over money are straining your relationship. Tell us what’s going on, and we may get you some expert advice on an upcoming episode. Find out how to submit your voice memo here.

Here’s how to submit a Modern Love essay to The New York Times.

Here’s how to submit a Tiny Love Story.

Unlock full access to New York Times podcasts and explore everything from politics to pop culture. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify.

Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.