This article is from the BiSexuality FAQ, by Jon Harley email@example.com with numerous contributions by others.
The simple answer is "no" or at least "not necessarily" - many of us are
absulutely certain that we are attracted to both sexes; there is no confusion.
Many people are bisexual for life, which proves it is not always just a phase.
It is natural for people who are coming to terms with a sexuality which is not
society's norm to be feel confused. For some people, bisexuality is a phase
between homosexuality and heterosexuality (and the individual in question
could be going in either direction); for others it can just be a brief
experimentation. But for many people bisexuality is a lifelong, committed
And even for those who ultimately do not stay bisexual for life, that does not
make it any the less valid as a sexual orientation. Many people have reported
that their sexual orientation has shifted over time; sexuality is dynamic, not
fixed. For some people it may be a small shift, others a major change of
lifestyle; but this does not make the points in between in any sense "wrong".
Life is a continuous process, and few of us remain exactly the same over long
periods of time.
Some people who behave bisexually (having sex with both MOTSS and MOTOS over
time) identify themselves as gay or lesbian or straight. This too does not
mean that they are confused, only that they base their sexual identity on
their primary interest rather than going for the more technical term bisexual.