there were no confirmed reports or public statements about BTS's Jungkook being in a relationship with Black Pink's Lisa or any official confirmation about them breaking up. It's essential to remember that celebrities' personal lives are often subject to rumors and speculations, but unless there is a reliable source or official statement, it is best not to assume or spread unverified information.
If there have been any developments or changes , I would not be aware of them. To get the most current and accurate information, I recommend checking recent news articles or official statements from the artists' agencies.