What does the celebrity mean when they say they have a long time friend?

Like Selena Gomez just posted a selfie with a guy. The caption was <br>“my long time friend” <br><br>What long time friend?? I know her whole family. I’ve been best friends with this family for 25 years. The dad, I’ve known for over 20. I would just call them family. <br><br>I feel like “long time friend” is a word used to describe people celebrities fuck but don’t want to upset their significant other by posting.