Wild Horizons (Harlequin Historical)

is book #18 in the Harlequin Historical line.
==Book Description==
A Wild Love Struggles To Be Born
For Megan Riley, the wagon train bound for Oregon seemed the only chance to leave the past behind, but the innocent beauty was unaware of the cruel rumor that branded her a wanton woman.
Jed Dossman was as cold as steel and twice as hard. He vowed no unmarried woman with Megan's "reputation" would join his train. So Megan became the wife of kindly Abner Claunch.
Through two thousand miles of treacherous wilderness, a searing need grew in Megan. She had no right to want Jed. She had made a promise to herself and to Abner. But how could she keep promises made in the cold light of reason when in the darkness passion beckoned?
(Description from fictiondb.com)