Embassy, by S. Alex Martin

This is a journey. Arman Lance wants nothing more than to join the Embassy Program and fly across the galaxy. He wants to find Ladia Purnell, a girl who visited his planet years earlier. They had fallen in love but their time together was short. Arman has become determined to find her again — to the point of obsession. He believes his happiness and future depends on it.
Arman expected people in the Embassy to think he’d follow his father’s footsteps. He is also expected to slip into a simple routine, a path that would take him straight to Ladia. But he never expected anyone to stop him. Especially not the adrenaline-chasing, ever-smiling Glacia Haverns, who decides it’s her job to show Arman there’s more to life than chasing desperate dreams.