People
Fame will go by and, so long, I’ve had you, fame. If it goes by, I’ve always known it was fickle. So at least it’s something I experienced, but that’s not where I live.
— Marilyn Monroe

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Fame is treated as a passing visitor: enjoyable, but never expected to stay. The speaker waves it off with a casual 'so long' and says they always knew it was fickle. What counts is having lived through it, while real life happens somewhere else entirely.
Context reviewed