First to Dare (Lessons in Love #4)
Olivia Blake

But the butterflies which exploded in her stomach didn’t seem to care.
The petite Goth girl isn't Duncan's type at all, but he can't get her electric blue eyes out of his head. Aside from being wickedly sexy, her quick wit and razor sharp tongue set him off like no other woman he's ever met. She's smart and she's got attitude and she needs someone who is her match. Fortunately for her he knows someone who just happens to fit the job description. Now all he has to do is convince her to give him a chance, even if it's against her better judgment. Of course that's just the beginning of his problems. Duncan has a secret, and if Lisa finds out it could spoil everything. His only hope is to keep her in the dark until she's in deep enough to accept him for who he really is.
He has to tell her the truth, but it gets harder with each passing day to take the chance of losing her.