Questions after so many years...

[Cyborg]

This might appear odd to some of you but I've got this "problem" (not sure, if it is one at all) for quite a while, now. I've been into transsexual women since I saw one for the first time. It happened to be at the "right time" when I was 12 and in my early puberty years. That was in 1997. However, I was not obsessed with t-girls during that time since GGs got most of my attention. Another reason was the absence of internet or any other access to "sufficient material". The first transsexual I've seen was, I'd find out a few years later, Lilienne Li. I was hanging out with a few friends after school in a video store and stumbled upon this VHS with Lilienne Li on the cover. I thought she was hot and did not think much about the whole thing. Later, when I was 15 or 16, I began to explore porn online and there you go, I stumble upon t-girls again. But this time I got much more into the whole shemale porn thing. Actually, I was much more interested or turned on by t-girls than GGs.
Like most of you, I used to ask myself what that was all about, what's attraction or if I was gay, blah blah. My conclusion was that I'm not gay, not interested in men and t-girls were just as women as ggs for me but I wasn't really happy about it. It took me some time until I fully accepted my passion for t-girls and went on without thinking about it anymore. And now, for more than a year, I've noticed that my attraction to t-girls has pretty much vanished and I can't find the reason for this sudden change. I thought it might be a problem with my sex drive but that's obviously not the case since I'm crazy for GGs like never before.
The cock was never really the point of the whole t-girl attraction for me but the whole package. My ideal t-girl had to have a very feminine and pretty face, feminine body, breasts and ass. The cock made it more perfect for me and did not hinder my perception of being straight. Flat-chested t-girls, CDs, femboys and men of course have never been my cup of tea.
And now, here I am and completely fixated on GGs like I was before I found out about transsexuals. Has anyone had similar experiences? Any thoughts are appreciated. I actually think it's too bad that I'm losing the hots for t-girls but I'm still curious about what caused all this.