Lova code

KHMLV TFBLS NTKGO
ARONL HOOOT SEYOA

KEY-514326

this is a code I have to decode
if you want to have fun try it.
Don't give me the answer.
Lova, I think there is something about BOOK in this.
I think I see the word.

No one will ever get this code!Because the key Lova gave is wrong! It should be 513426... and the answer is ... No, not so easy, if you want to know the answer why don't you try this code
GUNAXF SBEGUR OBBXZL YBATYB FGYBIN
clue: half of the cake
makes me smile
half of it baked
the rest takes a while
half half half

13th the friday, is 26 days away.
A to Z a million ways to say.
half of it makes your day.
half the cake on half the cake
half and half for the cake's sake.