is there a word for someone who has sex with inanimate objects?
Ummm…a masturbator?
If it’s a toothbrush, I can give you a name.
If a term of self reference, then “spouse” for many people.
vegisexual, if it happens to be with storebought produce…
or even garden grown.
“Sir… are you having sex with a pumpkin???”
“What the… is it midnight already?”
Pygmalionism
Pygmalionist, rather. Pygmalionism is the attraction to inanimate objects, named for “a king of Cyprus who carved and then fell in love with a statue of a woman, which Aphrodite brought to life as Galatea” to quote dictionary.com
An excerpt…
“Standing there shiny and proud by your side,
Holding your joint while the neighbors decide,
Why is a vegetable something to hide,
To hide, to hide, to hiiiiiiiiiiiiiiiiiide?”
–Call Any Vegetable by Frank Zappa
It almost has to be a form of fetishism. But I don’t think there is a more specific term. I could be wrong.
The website of a woman who fell in love with, married, and had sex with the Berlin Wall (don’t ask) called it objectum-sexuality. I don’t know if that’s an accepted term or just hers, and the website seems to be down.
um… How 'bout lonely or horny… or both? 
Pygmalionist, didn’t you guys look up at what others said before you? Thanks for the intelligence boost here Ender_Will.
So what would a galateist be into?
[whisper]The password is paraphiliac.[/whisper]
Paraphilia is not exclusive to inanimate objects. Any fetish counts as a paraphilia.
Child molesters, or people into S&M, bestiality, or any of a host of other fetishes are paraphiliacs. The term is too broad.
That sounds a little too sweeping, to me. As I understand it, foot fetish is one of the more common ones, and that doesn’t seem to match any of the terms in the definition of paraphilia.
And presumably, a galateist would refer to an inanimate object which enjoys getting it on with living things :D.
yes according to the Consise Oxford English dictionary the etomology of the term originated a long time ago and describes exactly the type of person you enquired about, the term is spelt: F-R-E-A-K