How do I classify (the genre) my novel?

Well, I am at least among the ranks of those who have actually completed a novel (all 110,000 words). I am going to start querying agents. The problem is my novel doesn't fit nicely into the standard genres. The most succinct way I have thought to describe it is "My Girl" meets "Fatal Attraction."

I am influenced by Stephen King (but it isn't horror) in the way I use children and childhood to set the stage (the children are 12). My style and voice reveal the emotions of the characters as they live life. To complicate it even more the main character has a religious (Christian) world view, but there is some very graphic language and scenes that definitely don't fit CBA standards. It would certainly be rated "R" if the MPAA rated it.

So do do I call it a coming of age story (half of it is), do I call it Christian fiction (even though it is rated R), do I call it a romance, do I call it a mystery (there are deaths that are unexplained until the end)? I'm afraid the Christian publishers won't touch it because it doesn't fit and mainstream won't touch it because the character is too religious. The main characters doubts, temptations and inconsistencies are not watered down. I think I subconsciously write psychological studies.

I wouldn't mind corresponding by email with more information. Any guidance, suggestions, or even directions to another place to inquire would be appreciated.