Audrey Thomas can't forget the night of passion she shared with Lucas Slade, the man she's loved for years. But it seems the sexy, superrich rancher has no clue who warmed his bed!

The mystery seductress at his Lake Tahoe retreat was Audrey? His best friend's off-limits kid sister? Now she's back at Sunset Ranch…and having his baby! Honor bound to do the right thing, Lucas never reckons she'll say I won't to his proposal—or that she'll settle for nothing less than all this cowboy has to give.