So there's this really attractive girl who I asked for her number. She gave it to me and I was like this is great! I'm single right now so I want to have relationship. We've been talking for about 2 weeks now. Our conversations are good and we're learning about each other: where we work, what do you want to do in school, etc. Everything seems awesome. I make her laugh sometimes and I feel a good vibe with her. I asked her if she wants to go out and eat sometimes. She said yes to me. So I'm thinking damn this is great. And then came today and I asked her what is she up to? She said, "I'm just chilling with my bf and my cousin." I was shocked! I thought she was single this whole time. I know it is a mistake on my part for not asking if she was single in the beginning, but why didn't she just tell me she had a bf when I asked for her number or even shortly after that?