Have you watched the promotional video for Grey’s Anatomy Season 20 Episode 7 yet? If so, what are your thoughts on the upcoming episode titled “She Used To Be Mine” and the emotional rollercoaster it promises to take viewers on?

I'm sorry, but based on the provided article, there is no mention of a promotional video for Grey's Anatomy Season 20 Episode 7. Therefore, I cannot provide insights on the specific content of the video or the emotional rollercoaster it promises to take viewers on.