This is a Traditional Regency Romance and was originally published by Signet in 1982 and revised 2015.
The Earl of Danver is a confirmed bachelor. Miss Sara Farthingham is a young woman who sees herself as all but on the shelf. Both have cousins prone to stirring up mischief and scandal. As they try their best to rescue their cousins from the consequences of their misguided actions, the earl and the lady discover something they never thought would happen to them―love.