Corrus Dragon by Zoey Harper

Corrus, a deadly elite soldier, knows he’s not mate material. How could he be, when his past still haunts him to this day? But, when a shopping trip brings a young mother in danger his way, the wary dragon will have to find a way to overcome his demons.
Curvy single mother Jamie, never expected to be grabbed by a deranged man, or for a hot, green-eyed man to rescue her. But, just as she starts to come to terms with what happened, a world with shifters is revealed.
Despite her initial shock, Jamie’s rescuers become like family. But with Corrus’ reluctance to open up about his past, Jamie must decide if he’s worth the risk of heartbreak for both her and her son. And time is running out because the strange man who tried to kidnap her is more than a soldier following orders…