"My boyfriend recently confessed his attraction to t-girls".
Okay a bit more on this subject about the "straighT" man: I really think this subject is confused and is often brushed under the carpet by sex professionals. The easy answer is to say (all) men attracted to T-girls are bisexual or have homosexual tendacies, but I really think that's way off the mark. I've said before in previous blogs - that most men attracted to T-girls are straighT (with a capital T). Bisexuality = sexually attracted to both genders; homosexuality = same gender, and straight = opposite sex.
From my experience, gay men are NOT attracted to shemales. There are men that are bisexual, but I'd say the large majority of men attracted to T-girls are turned on by the feminine traits (boobs, face etc) - and that her 'addition' is the added bonus to the classic T girl. It means he can extend the sexual experience without crossing the gender barrier.
If you consider a pre-op T-girl as a third gender - this means there must be a section of the population that are 'Tri-sexual' (and not necessarily bi-sexual). So maybe sex professionals should start considering: Straight, homosexual, bisexual and two additions, straighT and Trisexual, more thoroughly.