Okay, this is going to sound a bit cheesy, but I love the Goddess Summoning series by P.C. Cast. They are romance novels that are about modern women who, some way or another, accidently manage to switch worlds/bodies with Greek mythological figures.
One, an Italian-American woman, accidently gets switched with Persephone and falls in love with Hades (Goddess of Spring)...
and the other is an Air Force Sgt.

and gets switched with the mermaid daughter of Gaea and Poseidan. (Goddess of Sea).
There's also Goddess of Light, which I haven't read yet.
I don't like most romance because they don't always develop the characters enough, but I really like these.
So, here ya go, Xng!
Since I admitted I read Romance, I may as well admit that I'm reading 'Something Wicked' by Evelyn Vaugn. It's pretty good so far; the heroine is starting to fall in love with the 'good twin' of her sister's killer - whom she accidently cursed. It's original