Replying...
Intro. I was always afraid that my girlfriend would want to experience more at some point, want to test other guys and therefore thought that I would better give her freedom than that she would cheat behind my back. Although we were both rather inexperienced, I don't think she was a prude. We even had anal occasionally, although I always come super fast, she also blows and so on. I just wanted her to experience and openly without deceiving me - although it was clear to me that I am not the super lover, so there is always the danger that she will find me too bad. But she just wanted and wants her to have good sex.

Danai - foreign experience

@Walter