Have a Little Faith in Me by Sonia Hartl
When CeCe's born-again ex-boyfriend dumps her after they have sex, she follows him to Jesus camp in order to win him back. Problem: She knows nothing about Jesus. But her best friend Paul does. He accompanies CeCe to camp, and the plan - God's or CeCe's - goes immediately awry when her ex shows up with a new girlfriend, a True Believer at that. Scrambling to save face, CeCe ropes Paul into faking a relationship. But as deceptions stack up, she questions whether her ex is really the nice guy he seemed. And what about her strange new feelings for Paul - is this love, lust, or an illusion born of heartbreak? To figure it out, she'll have to confront the reasons she chased her ex to camp in the first place, including the truth about the night she lost her virginity.