All Out of Love (Men of Endurance #2.4)
Siera London, Olivia Gaines

Hank has it bad for third-grade teacher, Kelby Springfield. The single dad has been trying to get next to the reclusive beauty for months, so when she suddenly demands a kiss he’s determined to win her heart out of the starting block.
Kelby’s relocation to the small town of Endurance is strategic, not for romantic notions of finding a Mr. Right who’s all wrong. When a colleague’s good intentions lands Kelby in the arms of all-around good guy, Hank Stewart—her heart races faster than her common sense.
Hank is convinced he and Kelby have a running start on forever, but is she all out of love?