Always Yesterday (Heartsong Presents)

is book #781 of the Heartsong Presents line.
==Book Description==
As a female cop, Delanie Cooper is on her most difficult assignment yet. To stop a baby-selling ring, she goes undercover as an unmarried, pregnant teen. Her new partner, Eli Logan, plays the father. With his rugged good looks, Delanie doesn't have to fake attraction, but Eli's tough exterior and bitterness toward women make it hard even to be friends.
Eli is outraged at having another female partner. His last one nearly got him killed, and she wasn't the first woman to let him down.
He's sure he'll never need another woman in his life or anyone else, not even God. His past has shown him he can only count on himself. Amid danger and deceit, can Eli forget the pain of yesterday to see something different in Delanie? And will he come to know God, the only One who will never let him down?
(Description from paperbackswap.com)