Bi-curious is used to describe someone who is curious about or fantasizes about bisexual relationships, but does not yet identify themselves as being bisexual. In fact, a bi-curious person typically has little to no bisexual experience. They may have sexual fantasies about or develop crushes on individuals who are not of the gender that they normally prefer. Bi-curious is a term that may apply to either heterosexual or homosexual people.
Being bi-curious is not rare. Nearly everyone, at some point in their life, has curious feelings that don't correspond to their dominant sexual identity or orientation.