Forged by Love — Lynne Connolly

A dangerous enchantment that can only be broken by fire...

Vulcan, living in the body of Harry, Earl of Valsgarth, prefers a quiet country life, channeling his fiery temperament into his metal workshop. But he can't ignore a summons from Mercury. When he spies the ravishing woman across the London theater, he realizes why Mercury needs him. She is Venus, in the body of a French duchesse. In legend, his wife. But she is under an infatuation spell that has escalated into obsession. Unchecked, it's hot enough to cause another Fire of London. Harry is the only immortal with the strength to break it. Virginie revels in the joy she has found with Marcus, also known as Mars. Until Harry arrives in her parlor, leaning on his cane, oozing his particular brand of seduction. When murder abruptly splits Virginie and Marcus apart, Harry must cope with a painful withdrawal that could destroy her--and half the city. If Harry can't find who is framing her, she will lose her place in society. And possibly her mind to madness...

Warning: When the gods get busy, it gets hot as Hades. Could cause noticeable reddening of your cheeks. Which cheeks, we'll leave up to you.