Question: Other than author, what was the profession of the man who wrote Mars and Venus in the Bedroom?

Context paragraphs:
Mithuna (astrology): Mithuna is the third sign in Indian astrology.  The Mithuna is equivalent to the Gemini in Tropical Zodiac.  The only difference is that Mithuna is represented by a man and a woman.  Mithuna stands for couple (which Mithuna is represented by).  The dates occupied under this sign are June 16 to July 15.  In Mithuna (as seen only in the birth chart), Mercury is the ruler.  Moon, Venus, Saturn, and Rahu sees this sign and its ruling planet as a friend, the Sun sees the said two as neutral while Mars, Jupiter, and Ketu sees the former as hostile for them.  Emerald is their principal gemstone, night time is their time of strength, and 5 is their principal lucky number.  In its ascendant (or lagna), Venus is the most auspicious planet.

Killings (short story): Killings is a short tale written by Andre Dubus in 1979.  The short story entails how a man seeks revenge after the death of his son in cold blood.  In 2001, the story was adapted into Todd Field's film, "In the Bedroom".  The film starred Sissy Spacek, Tom Wilkinson, and Marisa Tomei, and was nominated for five Academy Awards – Best Picture, Actor in a Leading Role (Wilkinson), Actress in a Leading Role (Spacek), Actress in a Supporting Role (Tomei), and Best Writing, Screenplay Based on Material Previously Published (Robert Festinger & Field).  After the film's release the story was republished in a collection called "In the Bedroom" for which Field wrote the preface.

Men Are from Mars, Women Are from Venus: Men Are from Mars, Women Are from Venus (1992) is a book written by American author and relationship counselor John Gray, after he had earned degrees in meditation and taken a correspondence course in psychology.  The book states that most common relationship problems between men and women are a result of fundamental psychological differences between the sexes, which the author exemplifies by means of its eponymous metaphor: that men and women are from distinct planets—men from Mars and women from Venus—and that each sex is acclimated to its own planet's society and customs, but not to those of the other.  One example is men's complaint that if they offer solutions to problems that women bring up in conversation, the women are not necessarily interested in solving those problems, but mainly want to talk about them.  The book asserts each sex can be understood in terms of distinct ways they respond to stress and stressful situations.

John Gray (U.S. author): John Gray (born December 28, 1951) is an American relationship counselor, lecturer and author.  In 1969, he began a nine-year association with Maharishi Mahesh Yogi before beginning his career as an author and personal relationship counselor.  In 1992 he published the book "Men Are from Mars, Women Are from Venus", which became a long term best seller and formed the central theme of all his subsequent books and career activities.  His books have sold millions of copies.

Mars and Venus in the Bedroom: Mars and Venus in the Bedroom: A Guide to Lasting Romance and Passion is a self-help relationship based book written by John Gray, author of "Men Are from Mars, Women Are from Venus".  It is part in a series of books exploring the oft-clashing relationships between men and women.

Horace Ezra Bixby: Horace Ezra Bixby (May 8, 1826 - August 1, 1912) was a steamboat pilot on the Mississippi-Missouri-Ohio river system from the late 1840s until his death in 1912.  Bixby is notable in his own right for his high standing in his profession, for his technical contributions to it, and for his service in the American Civil War.  However, he is best known for having had as his "cub pilot" (that is, apprentice or trainee) the young man known to him as Sam Clemens, later to become famous under his pen name as American author Mark Twain.  Twain's descriptions of Bixby's character and pedagogic style form a good part of his memoir "Life on the Mississippi", and it was through this medium that Bixby—much to his annoyance—became well-known beyond the circles of his family, friends and profession.

Venus and Mars/Rock Show: "Venus and Mars/Rock Show" is a medley of two songs written by Paul and Linda McCartney and originally performed by Wings that make up the first two songs of the album "Venus and Mars".  The single was released in the United States on 27 October 1975 and in the United Kingdom on 28 November 1975.  The B-side was "Magneto and Titanium Man", another track from the album.  The single version is considerably shorter than the album version of the songs; in the single "Rock Show" is cut by more than 3 minutes and "Venus and Mars" is cut by a few seconds.  "Venus and Mars/Rock Show" peaked at number 12 on the "Billboard" Hot 100 in the US, but did not chart on the UK singles chart.  In the book "The Rough Guide to the Beatles", Chris Ingham praised both songs, describing "Venus and Mars" as "atmospheric" and "Rock Show" as "barnstorming".

Venus and the Razorblades: Venus and the Razorblades were a short-lived punk band.  The Los Angeles based new wave rock band was put together by Kim Fowley after he severed professional relations with The Runaways.  Fowley sought to put together a band with a teenaged male singer and teenaged female musicians.  Roni Lee (guitarist and songwriter) joined the band early and co-wrote "I Wanna Be Where The Boys Are" performed by The Runaways as well as Venus and the Razorblades.  Roni Lee also wrote and co-wrote many of the Venus and the Razorblades songs.  She also went on to play with Mars Bonfire and Steppenwolf.  Singer/guitarist Dyan Diamond was only 14 when she auditioned for the band in 1976.  The recordings featured session players associated with Fowley projects such as guitarist Mars Bonfire, formerly of an early version of Steppenwolf; and keyboardist Billy Bizeau, formerly of The Quick, as well as members of the band itself.

Man cave: A man cave or manspace, and less commonly a manland or mantuary is a male retreat or sanctuary in a home, such as a specially equipped garage, spare bedroom, media room, den, or basement.  The term "man cave" is a metaphor describing a room inside the house such as the basement or garage or attic or office, or outside the house such as a wood shed or tool room where "guys can do as they please", without fear of upsetting any female sensibility about house decor or design.  Paula Aymer of Tufts University calls it the "last bastion of masculinity".  The phrase is thought to come from the 1993 publication, "Men Are from Mars, Women Are from Venus".

Amtor: The Amtor or Venus Series is a science fantasy series consisting of four novels and one novelette written by American author Edgar Rice Burroughs.  Most of the stories were first serialized in "Argosy", an American pulp magazine.  It is sometimes known as the Carson Napier of Venus Series, after its main character, Carson Napier.  Napier attempted a solo voyage to Mars, but, because of mistaken navigational calculations, he finds himself heading toward the planet Venus instead.  The novels, part of the Sword and Planet subgenre of science fiction, follow earthman Napier's fantastic adventures after he crash-lands on Venus, called Amtor by its human-like inhabitants.  Unlike Barsoom, the desert planet of Mars, these stories are set upon a waterworld like Earth.  Most of the events of the series take place on the island of Vepaja, the kingdom of Korva on the island of Anlap, and the city-states of Havatoo and Kormor on the tropical continent north of Vepaja.

Supporting paragraphs: Mars and Venus in the Bedroom Men Are from Mars, Women Are from Venus
Answer: relationship counselor