Many books have been written about infidelity but when mistresses are mentioned they are, at best, pitied and, at worst, condemned. Contrary to popular opinion, long-standing affairs are seldom about sex alone and the complexity of such relationships is understood better from the inside rather than from the outside. This book takes a realistic, and sometimes uncomfortable, look at the issues such women face with genuine understanding and will give everyone who reads it a new perspective on these 'secret' women.