Crashed on an Ice World by Anna Hackett

He’s her boss. She’s his best friend. These two deep-space convoy security specialists are fighting their simmering attraction…until a starship crash on a deadly ice world changes everything.
Elana Korra loves her security job as a medic on the convoy ship, the Sky Nomad…except for the fact that she’s in love with her boss. Rynan is tough, loyal, and protective, and she knows he will never cross the line with her despite her deepest fantasies. But one scorching kiss sets up a smoldering tension, and as they head off into uncharted space on a treasure hunt to find an invaluable old Earth treasure, Elana knows it is time to make a change—get Ry to admit how he feels about her or leave. But a deadly attack leaves Ry and Elana on a damaged, out-of-control ship hurtling toward an unforgiving ice world.

Rynan Phoenix lives for his job of keeping the Phoenix Deep-Space Convoy safe. The nightmare of his childhood has taught him to steer well clear of romantic relationships, and he’s forced himself to ignore Elana’s compact body and gorgeous face. But when they find themselves stranded on an ice world with passengers to protect and space pirates hunting them down, Ry is forced to confront just how he feels about the most important woman in his life.
Ry and Elana will need all of their training in order to keep themselves alive. As they find hints to the old Earth treasure, their desire turns hotter and deeper…but then they discover that far more dangerous things call this ice planet home…