Help with writing erotic stories?

I write mine in third person, and first person, depending on the audience. When I write for my girl, it's always first person. If I'm writing for a larger audience, it depends, really. If I want the reader to feel for the situations the main character is getting into (pardon the pun), then I'll write it first person. If I want them to feel like a voyeur, then I'll write it in the third person.