A person whom, for one reason or another, prefers sexual relations with a dead human being over a living one. Usually a previous aquaintance and generally preserved similarly to a sex doll.
(see Sexy Loser)
Matt: DUDE i just saw a necrofeliac
George: You fucking idiot its spelt 'necropheliac'
Joe: Did u ask him if u could join him in the graveyard tonight?
Matt: OF COURSE!