You Only Love Once by Emily James

Five years ago my pride got in the way of love.
Now I’m about to swallow it.
Willow:
He was my first crush, my first love, and my first time.
He’s also the brother of my arch-enemy.
When he enlisted in the marines, he promised he’d be back soon.
He lied.
Now he’s back, and he’s wondering why the gorgeous kid, who looks a lot like him, is calling me mamma.
Ethan:
We agreed it was forever, but she never wrote me back.
My sister hates her, but she hates everyone.
When I lay my eyes on her, it’s as if nothing has changed.
She’s still fiercely independent and packs a mean right hook.
But now there’s a kid involved, it’s time to put our games aside.
And this time, I’m playing for keeps.