I'm not sure which specific 'Young Park Hye In' you are referring to. There could be many people with those names. But generally, a sad love story might involve unrequited love. Maybe Park Hye In loved someone deeply, but that person didn't feel the same way. They could have met in a place full of memories, like a park where they used to walk together, but as time passed, the relationship faded away, leaving Park Hye In heartbroken.
Sorry, I don't have specific information about Young Park Hye In's sad love story. It could be that they had a love that ended because of misunderstandings. One small misunderstanding grew and grew until it drove them apart, and Park Hye In was left with a broken heart and a lot of 'what - ifs'.
One possible reason could be distance. If they were separated by a large geographical distance, it might have made it difficult for their relationship to thrive and eventually led to sadness.
One of the most memorable love stories she had was in 'You're Beautiful'. In this drama, her character Mi - Nyu falls in love with the lead singer Hwang Tae - Kyung. Their relationship is full of cute bickering, misunderstandings, and sweet moments. The way they slowly grow closer despite all the obstacles is really charming.
I'm sorry, I don't know the specific love story between Jung Hye Young and Sean. There could be many people named Jung Hye Young and Sean. Maybe you can give more context to help me answer this question.
There could be a situation where Young was in love with Park Hae In but for some reasons like family opposition, differences in social status, or Park Hae In having feelings for someone else, the love story turned sad. For example, if Park Hae In was from a wealthy family and Young was not, the family might have tried to keep them apart, leading to a lot of pain and sorrow for both of them.
While the exact start of their love story isn't fully disclosed, it's likely that they first crossed paths in the context of the entertainment industry. Given that they are both actors, they may have met at an industry event or on the set of a drama or movie. Their initial acquaintance could have been quite casual, but as they interacted more, they discovered shared interests and a mutual attraction. As time passed, this developed into a deeper relationship, which eventually led to their marriage.