Hey so i was in school today and i was looking out the windows (My class is at the 2nd floor) and when i looked down i saw two girls (classroom on the 1st floor), actually i only saw one but there were two. Anyway, that one that i saw was soooo cute, and she smiled as she looked up (Problem is: i was with another classmate and i don't know if she was smiling at him or at me.) I was kinda hiding too but smiling back from time to time.
I'm really shy and i never had a girlfriend before so i don't know what to do in situations like this. The thing is, i like her, i want to get to know her.
By the end of the break a classmate (girl) wanted to help (i think) and made a heart out of paper and sent it down saying that it's from a guy who was at the windows earlier.
After 1 hour i went at the window to see if she was still there... no wait, i think that was after 2 hours.. anyway.. she was having PE outside and she looked at me (i was looking at the window below then i saw her outside) i hid inside and called the other guy and asked him if that is the same girl, we were planning to wave at her if she was looking but we had to go. I went home but he stayed because he had one more class. He went to the football field (i'm not sure, that direction though) and i went the other way, home. Maybe he met with her, that's as far as i know.

What should i do next?