The terms homosexual, bisexual and pseudo-bisexual are often misunderstood and misused. So here’s an explanation with particular relevance to transsexualism.
In the general vernacular, this is taken to mean ‘attraction to same sex’; so a homosexual male is sexually and romantically attracted to other males and a homosexual female to other females.
These are people who are attracted both to their own sex and to the opposite one. In practise, this can be sequential (one after the other) or concurrent (at the same time). In other words, the bisexual individual might form monogamous relationships, sometimes with the same sex, sometimes the other, or might establish multiple relationships with individuals of both sexes at the same time. It’s likely that social factors and the level of partner tolerance will affect this.
This term applies to a very specific sample and is NOT the same as the above. Pseudo-bisexualism is a function of one of the Male-to-Feminine trans forms, the non-homosexual or autogynephilic. In this the male subject becomes obsessed and sexually aroused by the idea of himself as a woman. As a result of this, he creates a second mental model of himself. This man is not homosexual so this erotic target must be a woman. As this gathers strength, the pseudo-bisexual autogynephile will seek out sexual or romantic encounters with men in order to validate it.