i can't sweat that
That’s not even on my to-do list. That’s not even a priority. I’m not even thinking about it.
He said he'd never come to my party. Now he's here. I can’t sweat that.
She said she'd never come to my concert. Now she's here. I can’t sweat that.
You said you'd never come to my birthday. Now you're here. I can’t sweat that.