Who is right me or my friend?

OK, so yesterday I dared my (ex-) friend to eat a cookie with lemonade and a frito at the same time and she could dare me to do something too. She ate it and didn't say "ew" or anything. So then she dared me to seriously ask out this nerdy boy in my cl. I said I would write him a note that was from his "secret admirer" and she said that was ok. Later in the day I asked her what she wanted me to write and she said I had to write "Will you go out with me? I love you! x o x o x o" Since this was the last cl I had with him I decided to wait until tomorrow to give him the note. (I haven't written the note yet.) So she went behind my back (I didn't find out until today) and told him that I really, seriously, liked him and wanted to go out with him. He believed her and he said he would think about it over the night. Today she asked him again and he said yes! She told me today at lunch that he really wanted to go out with me and I was really mad. When we went out for recess she told him that I didn't like him, but I didn't see it and I don't know what she said or if she said anything at all. So now I'm not talking to her or him and people are making fun of me, saying that I like Orsillio (the guy). Would you hold a grudge against her or should I keep on talking to her? I am so mad right now.