Saber by Kate Rudolph

The betrothal is bad.
Prince Saber regrets agreeing to an arranged marriage the moment he says yes. His bride is a dull aristocratic lady who he’ll be bound to for the rest of his life. No fated mate. No adventure. No love. So when he’s given an off planet mission he accepts it in a heartbeat. He can’t escape the betrothal, but he can delay it.

The ship crash? That’s a disaster.
Lady Mirage needs to talk to her betrothed. Alone. What better place than a space ship? But he’s not supposed to take off before he realizes she’s on board. When she and her betrothed crash land on a barren planet, they’ll need to rely on each other to survive. But that’s not the only trouble. There’s a dangerous fugitive on the planet with them ready to attack.

Mirage is tougher than she looks, and it’s not long before she and Saber are finding they fit together in more ways than one. But she has a secret. A big one. Will he still want her when he finds out the truth?