What the Bahá'ís must do is not commit adultery if they are
married, and refrain from sexual intimacy before marriage. It is not a sin in
the Bahá'í Faith if you do not marry, but marriage is recommended to the
believers by Bahá'u'lláh.
There is no teaching in the Bahá'í Faith that "soul
mates" exist. What is meant is that marriage should lead to a profound
friendship of spirit, which will endure in the next world, where there is no
sex, and no giving and taking in marriage; just the way we should establish
with our parents, our children, our brothers and sisters and friends a deep
spiritual bond which will be everlasting, and not merely physical bonds of
human relationship.
(From a letter dated 4 December 1954 written on behalf of
Shoghi Effendi to an individual believer; The Compilation of Compilations, vol.
I, Preserving Baha’i Marriages)
