This story actually happend with my second girlfriend and looking back this is actually a bit funny, since everybody knew what was going on that afternoon. Once again sorry: English isn’t my native language.
It was right at the beginning of my sexual life. I had a girlfriend before, but we’ve never gone further than petting, since she was afraid of my dick.
It’s a bit funny since I’m just average in lenght and maybe a bit above in girth, but both of us were virgins and before she became confident we sadly broke up.
I actually remember the situation quite well (who doesn’t ? It was one of my first sexual experiences): We often met at her place cause her parents were divorced and she was living with her father who also worked on weekends.