Hack by Annie Nicholas

On a mission with the Intergalactic Intelligence Agency to stop human abductions, Hack tracks the slave traders from Cosmos Resort and Dating Agency, an alien singles vacation spot, to a cruise ship. The resort introduced voluntary humans to aliens as prospective mates. The keyword was voluntary. The humans on this boat had chosen to have their memories wiped because they wanted nothing to do with aliens. Just as Hack is closing in on the slavers, he’s struck by lightning, short-circuiting his shapeshifting nanobots and cutting him off from his team. In an effort to hide, he uses the last of his strength to make himself look human before passing out in the closest bed.
Aspiring ocean videographer, Jeannie Havers has a hot lead on a rare shark spotting. She’d love for them to star in her latest documentary that shone a spotlight on sharks declining numbers and their importance to the ecosystem. With her last few dollars, she books a cheap cruise to a singles resort near the sighting. She has seven days to find them. That is until she wakes up with the worst hangover ever next to hottest man in the world. And he claims they are soulmates.
Hack’s new face makes him weirdly irresistible to the local human women and impossible to go unnoticed by the slavers, but he’s stuck like this until his nanobots recover. Worse, his soulmate is one of the humans who had chosen to have her memories wiped because she didn’t want to be mated to an alien. Could he spend the rest of his life pretending to be human?