A Date With Carter

You frown and stand, staring at the paper. You don't remember having that before.
You reach up and wiggle it out. It's a gray sheet of paper and it's folded. You unfold it and read the black ink.
"People say 'what you see is what you get'. Well, I see you, so are you mine? I think you are. Seeya at our date! ~Carter"
On the back there's an address for the date and a warning. "If you don't come, I'll blow up your house <3"
Eh? You don't even know a Carter! And he wants to kill you?! What do you do?!