I experienced that, a LOT in my younger years. From I'd say 11-20. Those are the same years, I was "out" to virtually, no one. I went to high school as "jay", everyone knew me as a guy. Not only was it a relief, it was lonely. The one thing I always wanted, was to ONLY be known as a guy, and when I got it, it felt great, but so scary at the same time. I don't really know where that feeling of "nothing there" came from, but I felt it, a lot. It wasn't until I had my first relationship where the girl KNEW everything, I stopped feeling it. I had a lot of relationships growing up, where the girls had know idea, yea, morally it was wrong, but it didn't feel wrong to me. Once the relationship progressed, or they heard rumors, i'd hit the road and find someone knew..
Once I got comfortable, in my own skin, which I still struggle with from time to time, I accepted the fact, I have what I have. I really don't mind it, I can still get off, yea I can't get off how I'd like, how I picture, but non the less. I think a packer, or prosthetic might greatly help you.