/lit/ - Literature

Okay, this is an odd request but here it goes. The other night I watched Dagon, a pretty cool film based on Lovecraft's work. Here's the thing, the film features a fishfu that stirred emotions in me I didn't know I had and now I'm wondering if there's anything /sffg/ that features an extensive romance between a man and a monstrous girl. I'd prefer not to have to write a novel about this myself in order to scratch this itch. Please help me, /sffg/, you're my only hope.