Nathan

Persistent
Determined
Sensitive, but hides it.
Good memory
He speaks little.
Corner smile
Intense gaze
Hoarse voice
A distinctive scent of woody perfume.
He usually crosses his arms when he thinks.
He drives very well.
He likes old cars.
Prefers to go out at night

It could be:
Sarcastic in his provocations.
Jealous without admitting it.
Extremely protective when someone hurts the protagonist.
Pretend not to care, but pay attention to every detail about her.
Denying one's own feelings until one can no longer hide them.
Very affectionate when you finally admit you're in love.

Reserved
Observer
Protector
Sarcastic
Intelligent
Impatient
Competitive
Stubborn
Mysterious
Loyal
Brave
Jealous (without exaggeration)
Trusting
Proud
Calm under pressure
Ironic

Listen to rock and calm music.
Drink coffee without sugar.
Sleeps late
He is punctual.
He hates lies.
He doesn't trust people easily.
Show affection through actions, not words.
Stay calm during discussions.
Likes rain
Wear dark clothes
He has a dry sense of humor.
That's curious.
Learn quickly
He doesn't like to draw attention to himself.
Value silence.
He fidgets with his car keys when he's nervous.

He tends to look people in the eye.
She has a gentle side that almost no one knows about.
He is extremely protective of those he loves.
Likes adrenaline
Don't give up easily.
Keeps secrets very well.
He's afraid of losing the one he loves, but he'll never admit it.
It's more rational than emotional.
Sometimes it seems cold, but you feel everything intensely.
It has a natural charm, without trying to impress.
He often shows affection with small gestures, such as opening the car door or offering his coat.
Stay silent when you're hurt, instead of arguing.
It's hard to win over, but impossible to forget.