Is this girl into me, and what advice could i get to make our relationship more(for girls and guys to answer)?

This girl laughs when i'm around and appears to enjoy my company. My brother notices this also, but i'm not sure. I dont know if its just me but lately it seems like she has been more tense around me lately. Yesterday i called her and was flirting on the phone with her for a few minutes, she seemed to be enjoying it. However, her reaction to me today seemed even more tense. As we were walking back from class though, i said something and she pushed me and i pushed her back. That is the first time she has done that. I've also invited her to do some stuff with me and she has said yes, then later on given me excuses. Is she blowing me off? What do you guys think? Likes me also or this tension i'm feeling is her not liking me?Is this girl into me, and what advice could i get to make our relationship more(for girls and guys to answer)?
I think she is.....maybe one of her friends likes you so she feels that she cant go out with you because its girl code......if one of your friends likes a guy first then you start liking him you shouldnt go out with him.......try to find out if one of her friends likes you....hold off on asking her out for nowIs this girl into me, and what advice could i get to make our relationship more(for girls and guys to answer)?
I think she likes you she is finding an excuse so you give her more attention and you talk to her. Im a girl and thats what most girls do. Just find ways to get a guy we like to talk to us. When you pushed her back honestly i bet she hated that! you could do to get your realationship going and get a frien to say it lookes like you like him do you. And if she says no she eather doent trust him or she thinks you will think shes wierd. If she says yes then you tell her you like her back if you do.