nervous about the situation...

Hey guys,im Johnny,nice to meet you :). I saw this forum and it seemed really nice,people are communicative and they give you a lot of nice advices.:) Well,shall I begin? Im 18 years old.Namely,when I was third grader,I fell in love with this girl that im still in touch.I never told her that ,that I loved her the whole time,like I was literally in love with her,the whole time,since third grade...Secondary school knocked on my door...I couldn't hide all those feelings inside me anymore,so I decided to tell her everything.I was so nervous about that,but it came well...She told me that she liked me the whole time too,I was so happy about that,but unfortunately,we never had a chance to be together...I mean,we had,but I didn't know how to use that chance,it was my mistake because im a man.....And I feel really bad about that...But life goes on... Eh,let me go back to the story...After primary school,we both entered different high schools...So normally,we couldn't communicate as we could in the past...I forgot to tell you that we were so close in primary school,and I knew the whole time that she was in love with me as well,by the way she acts.She was with me wherever I was,in the primary school,I was the kid that made problems,not problems with the teacher and stuff,I was polite and I always respected teachers,I made problems by skipping classes.So,as I had alot of nerds in my class,she was the only one that would go with me,because my "best friend" needed to go to class.I think it was the love that every kid dreams of,ah,when I remember...It was love which you can feel when you are young,I hope you can understand me..:) And as I said,we both entered different high schools,and by the time,we rarely heard.I was so sad about that,but she never had anyone after me.In fact,we were never in some kind of relationship and stuff,but it's like,you both know what you feel,and you both are not saying anything...Then,she moved to Switzerland.After that,a long long silence between us,5,6 months I think,which was reallyyy loooong for me in that time.After that,I saw message by her on Facebook.Oh Gosh,I was so happyyyyy! Then we started asking questions and stuff,and after that,we chatted every day for one year.She came back to our country after that,but I only saw her twice because I had to go to Germany,so we exchanged a couple of words,and silence again..She was shy,and I was... Soooooooooooooooooooooo....After a long long long chats,she came here again,and I'm so nervouuus! Enough with the story,I just want some tips,I'm sorry about my bad English,and I hope someone will read this hehe :).I just wanted to ask you how should I act when I meet her after one year of chatting :/? Like,last year,I was acting like a complete idiot,I didn't know what to say,because via mobile,we are talking about everything,and in person,we are so shy... :S I just dont know how to make this anxiety go...I feel so nervous :/...Thanks!