Without more specific details, it's challenging to pinpoint exactly which show or movie you're referring to. However, there are several productions that come to mind based on themes of obsession and scandal. Here are a few possibilities:
Finding the English-subtitled version can be challenging as the show is not currently widely available on major US or UK streaming services like Netflix or HBO. Escándalo, relato de una obsesión - Temporada 1 escandalo relato de una obsesion english version subtitles
The protagonist is watching the object of their obsession from across the room, realizing the situation is dangerous. Without more specific details, it's challenging to pinpoint
El relato de una obsesión is a Spanish-language psychological thriller/drama. When searching for English subtitles, use these exact titles: Without more specific details