The first chapter in this book is where you can request stuff.
Please and thank you!

A = Aftercare (What they're like after sex)
He'll make sure that okay and that he didn't hurt you at all.

B = Body part (Their favourite body part of their partner's)
He loves every part of his partner.

C = Cum (Anything to do with cum basically... I'm a disgusting person)
He loves Cumming in you

D = Dirty Secret (Pretty self explanatory, a dirty secret of theirs)
He loves when you wear lingerie.

E = Experience (How experienced are they? Do they know what they're doing?)
He's not that experienced but he's really good.

F = Favourite Position (This goes without saying. Will probably include a visual)

G = Goofy (Are they more serious in the moment, or are they humorous, etc)
He makes 1 or 2 jokes.

H = Hair (How well groomed are they, does the carpet match the drapes, etc.)
He has a little stubble.

I = Intimacy (How are they during the moment, romantic aspect...) 
Very very very romantic.

J = Jack Off (Masturbation headcanon)
He has never jacked off

K = Kink (One or more of their kinks)
He doesn't have one.

L = Location (Favourite places to do the do)
Bedroom.

M = Motivation (What turns them on, gets them going)
Seeing you dance.

N = NO (Something they wouldn't do, turn offs)
Something that would hurt you.

O = Oral (Preference in giving or receiving, skill, etc)
He prefer regular sex but he isn't complaining when you give him head.

P = Pace (Are they fats and rough? Slow and sensual? etc.)
He's slow and sweet.

Q = Quickie (Their opinions on quickies rather than proper sex, how often, etc.)
Like I said he prefers regular sex but he doesn't mind a quickie.

R = Risk (Are they game to experiment, do they take risks, etc.)
He'll do anything you want.

S = Stamina (How many rounds can they go for, how long do they last...)
He can last 2 and a half rounds.

T = Toy (Do they own toys? Do they use them? On a partner or themselves?)
He doesn't own any but he'll be willing to buy some for you.

U = Unfair (how much they like to tease)
He will tease his partner until he thinks he should stop.

V = Volume (How loud they are, what sounds they make)
He'll moan sometimes.

W = Wild Card (Get a random headcanon for the character of your choice)
The first time you guys had sex was at his house during a movie night.

X = X-Ray (Let's see what's going on in those pants, picture or words)
12 inches and very very very thick.

Y = Yearning (How high is their sex drive?)
A little hihger then normal.

Z = ZZZ (... how quickly they fall asleep afterwards)
He falls asleep at the same time you do.