You can find full episodes with English subtitles on the following official platforms:

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In 2014, there were a few dramas with similar titles. To ensure you find the right content, check if you are looking for one of these:

You can watch "Love Affair" for free on various streaming platforms, including:

Their passionate affair eventually threatens to unravel their lives as they face social disapproval and the "moral standards" of their community. Deep Themes & Analysis Secret Love Affair (TV Series 2014) - IMDb

The year 2014 was a landmark period for Korean dramas. It was a year that gave us epic romances, gut-wrenching melodramas, and complex explorations of human relationships. Among the vast library of K-dramas, one particular sub-genre captured the attention of global audiences: the "love affair" drama. Unlike standard romantic comedies, these stories dove headfirst into forbidden love, secret relationships, and the intense emotional (and often physical) connections that defy social norms.

You can stream "Love Affair" (2014) Korean drama with English subtitles on various online platforms, such as: