I'd suggest checking your local DVD rental stores. Sometimes they have older movies with various subtitle options. Or you can ask on social media groups dedicated to Tagalog movies, someone might be able to point you in the right direction.
There are many ways to find an index of English love stories. You could start by looking in a library's catalogue under the genre of 'Love Stories' or 'Romance' in the English literature section. Another option is to search online bookstores and filter for English love stories. They usually have some form of categorization or index for different genres.
English can play a very important role in a love story. It can be the language that two lovers use to communicate their deep feelings. For example, in many international love stories, English serves as a common language for people from different countries to express their love, like in a story where an American meets a French person and they fall in love while speaking English. It can also be used in love letters or text messages, adding a touch of romance with beautiful English phrases and words.