Given the ambiguity, perhaps the best approach is to create a fictional deep feature assuming that "Khushi Mukherjee" is a fictional character from a popular web series or book titled "Live1213", and explore their relationships and romantic storylines in that context.
If these succeed, Khushi Mukherjee will not only define Live1213 romance—she will redefine it entirely.
If you're looking for more information on Khushi Mukherjee's relationships or romantic storylines, I can suggest some sources: