What does she think of me?

A few weeks ago i was texting with this girl that i like, whoes been flirting with me a little. And she wanted to play 3 questions. So i asked who do you like, and she said it was somebody i knew. Then i asked who is it? She said his name starts with a J. Since one of my best buds' name is Josh i wanted to clarify, that way i didn't jump the gun. So i asked her whats the second letter. And she texted back U. So since im the only one in the school with the first letters J and U i knew it was me. So then she asked me who i liked. And i sed i'll tell u tomorrow. So the next day I see her talking to this guy, and i go up to her and say hi and she says hi this is Criss my new boyfriend. So now im really confused. Was she joking about liking me, or was she serious?