The Earl’s Wager for a Lady’s Heart by Abby Ayles

In this game of love, he has to decide what he can lose and what he can’t live without.

Winston Ambrose, the dashing but reckless Earl of Longberry, loses everything in a game of cards. A cruel wager becomes his only way out: his debt will be forgotten, but only if he manages to melt the heart of the obnoxious Miss Grace Leighton.
But when his trap takes an unexpected turn and his own heart is the one that starts melting, the deception he’s woven becomes his worst nightmare.
Marriage is the last thing on Grace Leighton’s mind. Content with her books and charity work, she is naturally suspicious of the charming earl that starts pursuing her. As she begins to discover the man behind the rumors though, her heart starts changing in the most unexpected ways.
When Grace finds herself entangled in a dangerous mystery, Winston is the only one she can turn to for help. While they race against time to unravel the scheme of a devious mind and save an innocent soul, their secrets and lies threaten to tear them apart forever…