He's being very immature. You shouldn't be embarrassed or feel insecure because you are having your period - it's a very natural thing. However, that doesn't mean you should have showed him. In summary, he got what he asked for and you got what you asked for (by showing him). Hope you both...
I don't. A few years back I read about a lady who was charged with exposing her genitalia in public. She successfully argued that this was impossible since female genitalia are internal. Obviously the spirit of the law was to ban public indecency, but the letter of the law was so caught up in...