The Friend Game by Heather Miekstyn

Love is patient…supposedly.

Potter Hannah Garza never expected to end up destitute and living in her sister’s guest house, but alas, these things happen. In her efforts to rebuild her life up from this very low point, Hannah manages to land herself a job teaching art at Grace Canyon, the prestigious church and school attended by her sister’s children. True, she’s not technically qualified for the position, but God calls the underqualified then equips them, does He not?
This is basically that. So everything is fine.
At least until Hannah meets Luke Abbott, the handsome young pastor of Grace Canyon. Luke is generous and kind and he volunteers his time to coach flag football on the weekends. He’s sweet and funny—and far holier than Hannah could ever dream of being. Yet inexplicably, Luke seems to be interested in her too.
However, Luke agreed to remain single for his first year at the church, which means the two of them can only be friends…for now. But between secrets from both Hannah’s past and present and the growing attraction between them, the friend game they’re playing may end with them both losing their jobs and any hope for a real relationship.

Then again, games for two usually do end with both players losing their hearts.