A good-looking guy looks really confident and professional in his flirting. I showed him that I liked him and it was definitely a mistake. I realized it later cause he took my attraction for granted. I think talking to me helps boosting his ego, because he didn't take any steps after realizing that I was too easy for him. That's my idea of the situation. But I am a human being, and it hurts me that he behaves like this to me. So my question is how to set boundaries with this type of person? He always approaches me first, so it's hard to just ignore him…