A Date With Carter

You pick up the box and grunt. It's heavier than it looks. How can something so heavy be so fragile? Then you remember glass and take the box inside.
You tear through the cardboard and tape with your bare hands to reveal a box inside the box. It's wrapped in yellow wrapping paper and has a bright green ribbon. You read the tag on the side, confused. It's not your birthday, so why would you get a box wrapped so beautifully like this?
The tag reads, "To: My dearest Y/N. From: Carter <3"
You don't know a Carter. Eh, might as well look inside.
You eagerly tear through the paper and open the box. You gasp. Inside, there are thousands of candies and chocolates and fruits. The boxes and bags of sweets gaze up at you, begging you to eat them. Whoever this 'Carter' is really knows what you like.
You start to dig in immediately until you see a note at the bottom. Picking it up, it says,
"Twinkle twinkle little star,
You're my date, oh yes you are!
Soon you'll want to marry me,
Or I'll hang you from the highest tree,
Twinkle twinkle sweetie pie,
Because our date is coming nigh"
Your throat goes dry. What. The. Heck.
There's an address in the corner of the note with a time and a warning on the back. "If you don't come, I'll burn your house down <3"
What do you do?!