Dose this girl like me?

Okay, I'm in 8th grade, and in my homeroom there is a niuce girl. We ususally talk everyday I loook at her, and sometimes I see her look at me and smile. When I talk to hershe laughs a lot at my jokes. I think we would be the perfect match, she is smart and I'm smart. We are both very shy. How do I know for sure If she likes me? What are some sighns if she is flirting with me. She smiles at me and we tease each other. So how do I know if she likes me? (Without actually asking her) I'm shy. Thanks for your help!!!