The pair originally was spotted in March hanging out together side-by-side at a Los Angeles Lakers game, despite reports that they were looking to keep their relationship low-key, at least as much as was reasonably possible. According to a source by way of People, the relationship simply “ran its course,” despite the fact that they had been a “serious” pair.
“Nina is always so busy with different projects, it’s hard for her,” said the source.
Source : https://www.distractify.com/p/nina-dobrev-and-grant-mellon-break-up