This is about someone who has turned caretaking into an identity. She catalogs every grievance while commanding herself to let go, then ends by begging him not to leave. The contradiction is the point. She doesn't want the relationship, she wants the job of fixing it.
When you're not there, I smile a lot / I feel emotionally out of a job
She admits she's happier when he's gone, then immediately frames his absence as unemployment. The second line erases the first. She's built her sense of purpose around managing his dysfunction.
Think of me, you can't pay for therapy / Nothing left to bleed, you spent all your clarity
Therapy shows up as a paid service she's replacing for free. She's positioned herself as his unpaid counselor, and now she's drained too. The 'clarity' line might mean he's used up his ability to think straight, but it also reads like she's the one who's lost perspective.
I never liked it when you'd do me like that
She repeats this four times without ever saying what 'like that' actually means. The vagueness protects something. If she named the offense, she'd have to decide whether it's forgivable or not.
Don't go / Please don't go, please don't go
The entire song commands 'let it all go' until the last thirty seconds, when she panics and begs him to stay. She doesn't want release. She wants to keep the job she just spent three minutes complaining about.
The song ends by contradicting itself because she can't let go of the role she hates. She doesn't want him, she wants the problem. The last desperate 'please don't go' is maybe the most honest moment, admitting that losing him means losing the job that defines her.