Up until that point, there was no public information or confirmation about BTS's Jungkook and IU being in a romantic relationship or breaking up in 2020. It's essential to be cautious about believing rumors or unverified information about celebrities' personal lives, as they often spread without any factual basis.
If there were any developments in their personal lives after 2023, I wouldn't have information about them. If you're curious about their current relationship status or any other recent news, I recommend checking reliable entertainment news sources for the latest updates.