Five Minutes Longer (Enhanced World Book 1) by Victoria Sue

Fighting a never-ending battle since the day he was born. His selfish mother, his father's suicide, his homophobic brother, and finally his undiagnosed dyslexia stopped Finn's dream of joining the FBI before it could even start. His one chance--his only chance--is joining an experimental group and partnering an enhanced human with lethal abilities that wants him to fail. Saving the world might be doable. Not losing his heart will be impossible.