haha but Alek enforcing the “no secrets” rule throughout their entire life together and just being like, 

“Deryn, did you eat the last of the food?” 

“…No…”

“No secrets, remember?”

“Barking spiders. FINE. YES, YES I DID. I ATE IT ALL. THAT STUPID PROMISE WAS TWENTY YEARS AGO, CAN’T YOU LET GO OF IT?”