From the Highest Mountain (Harlequin Romance, #3217)

Samantha preferred being enemies

Samantha adored her brother, David, and wanted nothing to spoil his marriage to Lynda. So when his best friend, Doug, asked Sam what advice she'd give a bachelor who was head over heels in love with his best friend's wife, her reply was prompt: "Find somebody else. Somebody single."

That's how she got maneuvered into a temporary engagement with Doug--a man she loathed. Other people might find the situation humorous--but Samantha was determined not to be bested by her old enemy!