Jennie Kim, a member of the South Korean girl group BLACKPINK, and Kai (Kim Jong-in), a member of the South Korean boy group EXO, were reported to have been in a relationship. However, there were no official statements or confirmed reports about their relationship status at that time.
It's important to note that the personal lives of celebrities are often kept private, and rumors and speculations about their relationships are common in the media and among fans. Sometimes, celebrities themselves choose not to disclose details about their personal relationships to maintain their privacy.
Since my information is not up-to-date, I don't have any information on their relationship status. If there have been any updates or official statements released after that time, I would not be aware of them. For the latest information, I recommend checking reliable news sources or official statements from the agencies representing Jennie and Kai.