GIRL PROBLEMS! HELP- 13 YEARS OLD?

hi, im 13 years old and i go to high school. I really llike this girl whos new and ive been helping her around the school and we are in the same homeroom as well. we sit next to each other in most classes and she also hangs out with me, but the problem is that today when we were at the lockers she kind am ade it obvious that she likes my friend and he also called her 'hot' but said that he doesnt like her (not to her face btw and she doesnt know) and im thinking that she might like me as well, anyone hhav any suggestions on wat i could do?? i really like this girl