Gender Identity vs. Sexual Orientation
Cindyo:
You are asking the question regarding sexual orientation of CDers. That is a separate issue from Gender Identity, which is what crossdressing typically involves.
There are several studies on crossdressing that confirm that the vast majority are heterosexual. If you do a google search on the terms "crossdressing studies heterosexual" you can find some excellent articles on the topic. There have been several studies conducted regarding the sexual orientation of crossdressers. The consensus of these studies can be found in some books described at this page:
http://www.crossdressers.com/forums/...p/t-33529.html
According the person posting the names of books that summarize crossdressing studies, these books explain that "the various studies have found crossdressers are usually hetrosexual-ish. In other words, the number of gay and bisexual crossdressers appear to be pretty similar to the population at large."
If your SO is claiming to be heterosexual, then it is very likely that he truly is. Whether he is faithful and monogamous, the author says, is another issue entirely.
There is another site that goes into some detail with analysis of the gender-identity vs. sexual orientation distinction. These two concepts are separate and need to be identified separately. Here is an excerpt from the site:
http://toselfbetrue.com/transgender/index.html
"Crossdressing refers to cross-gender expression, often the expression of a gender identity. People generally experience their gender identity and their sexual orientation as two different things. Gender identity means one’s sense of oneself as male, female, or some type of transgender. Sexual orientation refers to one’s erotic attraction to men, women, both, or neither. Logically, any variant of gender identity could be paired with any variant of sexual orientation. We can think of a person’s “gender identity and sexuality” constellation as having five components:
1. Genetic sex (chromosomal sex)
2. Primary gender identity
3. Secondary gender identity
4. Primary preference in romantic/sexual partners
5. Secondary preference in romantic/sexual partners
"The primary-secondary distinction for gender identity and sexuality stems from the fact that people may be bi-gender, having both masculine and feminine components to their personalities; and they may be bisexual, having erotic attractions to both men and women. People who are bi-gender or bisexual practically always have a stronger identity or preference and a weaker one.
"The most commonly encountered heterosexual men are ♂♂♂♀♀; the most commonly encountered heterosexual women are ♀♀♀♂♂; most lesbians are ♀♀♀♀♀; and most gay men are ♂♂♂♂♂. According to the best research data available, most part-time male crossdressers are ♂♂♀♀♀. Whether or not that research stands the test of time, the essential point for this discussion is that typical crossdressers and typical gay men are not one and the same. They have different constellations of personality traits."
So in conclusion, Cindyo, it is not hard to believe that your SO is truly heterosexual even though he may have a preference for crossdressing and displaying feminine gender traits. The scientific studies that have explored these issues have found that Gender Identity is distinct from Sexual Orientation. From the available literature you can find that it is a widely accepted finding in the medical community that the vast majority of crossdressers are primarily heterosexual and not homosexual in their sexual orientation.