Hello Daan,
My girlfriend and I were late to the party, and wanted to know if you could add us and send us the Swapnote stationary as well. As far as I can tell, the code we should use for you is 1590-4901-5293. My friend code is 3737-9697-7605 (Matthew) and hers is 3136-6723-0452 (April). If we need to update the code we have listed for you, let me know and I will do so. Thank you for taking the time to do this!
-Matt