The Security Guy by V.C. Lancaster

Anna has been sent to the San Diego branch of the Department of Extra-Terrestrial Immigration from her London PR company to negotiate a contract. Her job is to help improve the public image of the local Teissian refugee community after it has come under attack from a local politician.
On her first day there, she is invited to the office Christmas party. The next morning, she wakes up beside a tall scaled alien named Khy. Anna just wants to forget it ever happened – not that either of them can actually remember what happened – but Khy is insistent. In his culture, he is now honour-bound to stay by her side, at least until she can prove she’s not pregnant. Anna knows it’s impossible, but she can’t get rid of him, and what’s worse is that she’s due at her brother’s for Christmas in a matter of days.

With no other choice, she and Khy have to pretend to be in love for real so he can join her in New Hampshire for the holidays. When their relationship is suddenly exposed in the worst possible way, and Anna becomes a target for anti-Teissian protesters, Khy has to be her bodyguard as well as her boyfriend.
With everything spiralling out of Anna’s normally tight control, Khy is the only one she can rely on. But what does that mean when the inevitable happens, and they’re forced to admit she’s not pregnant? With nothing keeping them together, they have to make a choice. Was any of it real? Or were they just a drunken mistake from the start?