Is This Love?

Narcissa Black, doomed to a loveless marriage with Lucius Malfoy, finds herself falling for Severus Snape. As they see each other behind Lucius's back, a harmless attraction heats up into a searing affair. But what happens when a pregnancy and a sexy older sister stir things up? Main pairing: Snape/Narcissa. Other pairings: Lucius/Narcissa, Snape/Bellatrix.