What should i do right now?

Im 13 and im turning 14 in august. A couple of month ago, i told the girl i like that i liked her. I texted her and told her. she texted with only a couple of words. she didnt say anything mean. she was just like ok and oh... Then i texted her a couple of days later that i dont like her... a couple day ago was the last day of school. it weird tho cause we look at eachother for like a split second. We got our yearbooks and got them signed. I wanted to get it signed by her and she was walking around. i dont know if she was walking around to get near me. as soon as school started, she walked into my homeroom. we were looking a couple of times. im pretty sure that she wanted me to sign her book. i wanted to sign hers but i was a . as soon as school ended, she went up to me and asked me to sign it. i wrote "have a great summer theresa" and to be funny a drew a messed up heart over my name. on my book, she wrote the same thing "have a great summer. ur asian friend, theresa" with a heart. i looked at other peoples yearbooks and she didnt put any heart next to anything else. i havent texted her or really talk to her in such a long time. the last time i texted her was when i told her i didnt like her. apparently, shes going to a catholic highschool to... i feel like i wasted all my chances.............. i want to die right now...i can not talk to her at all in real life. i can to other girls but definatly not her... what do i do? if i should text her, wat should i text? She might be with her friend cause its the last day and if a text her she would show her friend...i no from experience becaue last time i told her i liked her, she told her friend...shes not the kind that would talk much or text...i really like her but i want to somehow talk to her. it would be kind of awkward to just text her all of a sudden. also, shes really popular and im not that popular.i asked her who she liked last time and she said no one...im pretty much a klutz...should i text her?wat if shes like " how does he have my number". or is he for real? shes adopted and im asian.... her friends will think i only like asians maybe.... this is so confusing... if i do she'll be like wtf. or should i text later when she might be alone.... this is all screwed up.i cant ask her to go to the park or eat or something cause im to scared...shes the type of person who will text with a word. i have a good friend who is like my brother. we hung out 2 days ago. i told him everything and he asked for thresa's phone number. i gave it to him and a couple of hours later when he left, he texted her "remember me? i came to your school. i heard ur going to a catohlic school" she said "hey i remember you. and no i decided to stay in nanuet." now im like *** yea! and a couple of minutes later, theresa texted me, "hey, are you going to nanuet". i said yeah. she said ohh......so i was texting my good friend the next day. i know that he told her to text me. hes denying it. i told steven if i should ask theresa "are you going to a private school" he said maybe. than right after that, theresa sent a text to me "No." im like wtf. i asked wat? she said im not going to a private school. i said howd you know i was going to ask? she said steven texted me. now i feel like a real . all day today i didnt text because im scared of screwing up again. if i text steven, he will most likely tell theresa. and theresa doesnt seem to have any interest in me...im pretty sure steven told theresa to text me to cheer me up or something but still. help please..PS i want to be friends with her and talk to her and tell my feelings and stuff...if people find out , im fuked...