Eat You Up by Lucy Leroux

Dmitri, a werewolf and thief-for-hire, finds his true mate under the worst possible circumstances—at 35,000 feet.
Dmitri, a high-end thief, is flying cross-country for a lucrative job when the woman destined to be his mate is seated next to him. Her scent drives him to the edge, but he manages to control himself on the flight by the skin on his teeth and fate—by way of the flight being diverted because of a terrible storm.
Nina isn’t sure why she’s trying so hard to get home in time for her sister’s wedding, given that the groom is her ex. But indulging in an affair with the aggressive and attractive man who has come to her rescue brings worse problems to her table. It’s just supposed to be a fling, but Dmitri clearly has no intention of leaving—ever.
When Dmitri’s new employer turns out to be Nina’s ex’s father, the line he spent a lifetime blurring becomes crystal clear. Unfortunately, by the time he realizes this, it may be too late to save his mate.