Does she like me? Girls advice needed;)?

Okay, so we're both sophmores in high school. And we have spanish together. She was in my spanish cl last year, but we really didnt become friends. we were just aquantances. but this year, we've become really good friends. and ive always thought she was really pretty. but this year, its develpoed into a crush. So we have spanish together, and i bring a snack for us to eat everyday. and when she walks past my desk to get to her seat, she always acts like shes gonna hit me or something. and today, she got up to throw the snack wrapper away, and as she walked behind my chair, i scooted back really fast as an attempt to flirt with her.she laughes about it like normal. and on the way back from the trashcan, she tickles my side, like where every person is really ticklish. and she smiles about it then too. and we both laugh obviously. then last week at the football game, i was looking fro my friends nick and jacob to sit with, but i couldnt find them. it was the rival football game which is the biggest game of the year in the whole county. so it was extra crowded. and i finnally found my friends, and was walking to sit with them, and she playfully pushes me, and asks me to sit with her and her friend meagan. so i sat with them the whole game and we were pretty close together. like shoulder to shoulder (literally) because it was so crowded. and we had a really fun time. also in spanish cl i look at her, and when she looks at me, we both smile, and laugh. and i see her in the hallway two periods later, and we always smile and wave. I want to either ask her out, or to homecoming, which is the first weekend in october. so does she like me or not? i cant really tell! HELP ME OUT! sorry its so long, but your help will greatly be appreciated!