How to Be Successful in your Love and Sexual Life by conservative priest Jean-Benoît Casterman to students.Casterman’s book claims that “excessive influence” from mothers can cause children to be gay and and says “homosexual tendencies” are “not wanted” and that gay people won’t be “happy,” LGBTQ Nation reports.“Today, some people act like homosexuality is normal,” Casterman wrote. “However, sexual fulfillment is only possible with the otherness of a man/woman, and it’s both mental and physical.”He blamed homosexuality on “the result of emotional development marked by an excessive influence of the mother during childhood or as a result of sexual child abuse by adults that induced an attraction to the same sex or a fear of the opposite.