These Broken Stars by Amie Kaufman & Meagan Spooner (2013)

When a luxury starship crashes on an alien planet, two survivors — a spoiled heiress and a disciplined soldier — must rely on each other to survive.
Romance and survival intertwine as they uncover eerie secrets buried beneath the planet’s surface. Kaufman and Spooner’s prose is cinematic and emotional, mixing heartache with mystery. It’s beautifully written and powerfully romantic.

Rating: ⭐⭐⭐⭐½