NOTE: this post contains spoilers for The Marvelous Mrs. Maisel season 5 episode 6, “The Testi-Roastial.”
We finally find out what caused the massive rift between Susie and Midge. It's 1985 and Midge (Rachel Brosnahan) is performing. She talks about her worst breakup, which was with a woman, a friendship that had lasted longer than all her marriages combined. Even though the jokes are funny it's clear she's talking about Susie (Alex Borstein), and that there's a lot of pain there.
