Bound to the Alien Prince by Celia Kyle

This alien prince stole the wrong ship — and found his fated mate.

Overlooked royal Dante Lorrz is fed up when his ne’er-do-well brother gets their older brother’s prized ship. Dante steals a ship to leave Lorr, only to learn his sister’s been abducted.
The ship belongs to fiery adventure-loving Captain Tinsley Adams. Their instant chemistry convinces Dante she’s his fated mate. Even after stranding her crew, Tinsley agrees to help find his sister.
Their investigation reveals the mortal enemies of Lorr, the Jorvlen, took Dante’s sister to enslave her. Infiltrating a Jorvlen ship, Tinsley is captured but finds an ally—the missing princess.
There’s only chance left to get her back, and Dante has to take it — no matter how risky it is. He will get his girl and spend a long time marking her as his.