The term 'pelli choopulu' might refer to a specific event or a series of events. It could be a story that has been passed down through generations in a certain area. It might involve real people and their experiences related to, say, matchmaking, love, and relationships. For example, it could be about a young man and woman who overcame various obstacles to be together, following the traditional ways of their society. But again, this is all conjecture as we don't have enough information about what exactly this'real story' pertains to.
Hard to say for sure. It might draw inspiration from real-life situations, but could also be entirely made up. A lot of such tales blend fact and fiction.