From the album Nothing's About to Happen to Me
This is about love that has stopped being mutual but refuses to end itself. Mitski stays put while her partner weighs leaving, and the cats become the quiet proof that she will survive this either way. The whole song sits in that awful waiting period where you know someone is already gone but they have not walked out yet.
I won't leave you 'cause I still love you / So it's up to you if you choose to go
She hands him all the power and pretends it is generous. The cats sleeping beside her are the only things keeping her from complete dissolution while she waits for him to decide her fate.
You say, 'It's so hard' / But it feels simple to me
He makes leaving complicated. She sees it clearly: he does not want to be with her anymore. The gap between his drama and her clarity is the whole problem.
So I've been trying to stop trying / To be like someone you'd still like
She knows contorting herself will not work. If changing could have saved this, it already would have. That last line kills because it admits defeat while sounding almost rational.
Maybe tomorrow night / The cats will be nowhere in sight / But I'll be glad to know / They're out following their heart's delight
The cats become stand-ins for him. She is pre-forgiving their absence, practicing the grief of being left behind while imagining freedom looks good on them. It is self-destruction dressed as acceptance.
The cats matter because they will still be there. Mitski is not really okay with any of this. She is just very good at saying she is.