Second Alarm (Firehouse Fourteen #5)
Lisa B. Kamps

Beth Fuller has sworn off men thanks to her critical and controlling ex-boyfriend. One big problem—she misses the sex, even if she is convinced she’s no good at getting down and dirty. Seeking a solution to her sexual hang-ups, Beth turns to on-line dating and meets Adam, the one man who can unlock her passionate side.
But the no-strings-required encounters turn into something more each time Adam and Beth see each other. Emotion is a scary thing—scary enough to send Beth running away in an effort to save her heart before it's too late, leaving Adam to face the biggest challenge of his life: walk away, or find the courage to chase after what he really wants, even if it means exposing his own weakness in the process.