---
title: "An Affair: My Sister-in-law's Love"
year: 2018
canonical_url: "https://www.archytele.com/show/an-affair-my-sister-in-law-s-love-2018"
media_type: "movie"
tmdb_id: 554776
imdb_id: null
status: "Released"
runtime_minutes: 73
community_rating: 4.9
vote_count: 9
content_rating: "Unrated"
---

# An Affair: My Sister-in-law's Love (2018) — Television & Cinema Intelligence Dossier

> **Archytele Living Vault Canonical Record**: https://www.archytele.com/show/an-affair-my-sister-in-law-s-love-2018

## Executive Summary & Cultural Positioning

This South Korean film is a drama that revolves around the life of a young woman who lives with her sister. The story begins with the sister's concern for the woman's academic performance, leading her to hire a tutor. As the woman spends more time with the tutor, she develops feelings for him. The two eventually engage in a romantic relationship, which improves the woman's academic standing. However, the situation becomes complicated when the sister announces her intention to marry the tutor, leaving the woman to grapple with the potential loss of the man she has fallen for. The film explores the complex dynamics of family relationships and the consequences of unrequited love.

## The Hook & The Verdict

**The Hook**: "A young woman's secret love threatens her sister's upcoming marriage."

### Why Watch
- Explores complex sibling relationships
- Shows the pressures of academic expectations
- Intense emotional stakes

### Caveats & Content Note
- Mature romantic content limits younger viewers
- Love‑triangle plot may feel melodramatic
- Tone & Suitability: Contains mature romantic and sexual themes, appropriate for adult audiences (19+).

**Micro-Themes & Vibe Matrix**: drama, romance, family, melodrama

## Streaming Availability Matrix

Direct streaming licensing updates dynamically. Consult the live tracking interface at https://www.archytele.com/show/an-affair-my-sister-in-law-s-love-2018#watch.

## Creative Credits

- **Directed by**: Choi Min

## Key Cast Continuity

- **Lee Chae-dam** as *Eun-joo*
- **Do Mo-se** as *Je-hyuk*
- **Kim Ji-yeon** as *Eun-hee*

## Canonical Frequently Asked Questions

### Q: What is the genre of the film?
It is a drama and romance film.

### Q: What is the runtime?
The film runs for about 1 hour and 13 minutes.

### Q: When was the film released?
It was released in South Korea on July 26, 2018.

### Q: What is the age rating?
The film is rated 19+.

### Q: Who are the central characters?
The story focuses on Eun‑joo, her sister Eun‑hee, and tutor Je‑hyuk.

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*Generated by Archytele Open Intelligence Systems. Data verified against TMDB and JustWatch APIs.*