PSL idea: I've had a character bouncing around in my brain where she's recently been diagnosed or is about to be diagnosed with bipolar II, and I'd really like to play her within a relationship or a marriage. She's always had issues and maybe they've been together since high school or college, and he's been sympathetic, but she struggles and thinks he deserves better.
It would be even better if he had his own concerns so it's not at all one-sided.
No damsel in distress here, but very honest discussion about depression, possible childhood trauma, and struggling as an adult to navigate the world sometimes.