I have the same problem. I'm bisexual and trans, but haven't had any surgeries. I do get too excited and clingy almost because I like it when I get attention from the specific girls I like, when I impress them and be their friend or feel like they really like having me around.

It's like a reaction, you get too attached and you want nothing else, because you really love the feeling of it. When it consumes you you lose insight of what's really going on and end up disappointing yourself.

I can relate to you in a weird way, even though I'm bi and male. I figured, I'd rather had been born a girl and I just like feeling how I relate to girls and my lesbian friends a lot, because we both have the same struggles everyone does, but my point is that you know what you like and want, but you always in a mental battle of balance of being too attached or you don't like the person to begin with or trying to show that you aren't too much or too little.