The No Kiss Contract by Nan Campbell

Ambitious corporate attorney Davy Dugan is determined to become the next name partner at her law firm, but her demanding career has left little time for family, especially her younger half-sister, Tally. Hoping to rebuild their relationship, Davy is forced to work with Anna, Tally's other half-sister, a woman she can barely stand.

When a misunderstanding leads Davy's boss to believe she and Anna are engaged, the pair reluctantly agree to a fake engagement that could benefit them both. As they keep up the charade, long-standing animosity slowly gives way to unexpected attraction, forcing them to question whether their relationship is becoming all too real.