ive been seeing this girl for about 3 weeks or somewhat, before that we was very close friends, but her bestfriend at a party told me she liked me. That party i got loads of IOI's from her and kiss closed it, I took her home in a taxi and made sure she got in that night. Before that we was texting often, she always text me first until that night.
Now though, it's weird, she will never seem to text me first. At college i get loads of IOI's, shes always turning her head looking at me every 5 seconds, and when im chatting to other girls and laughing and such, her face simply drops when she notices.
I once told her about a two weeks ago, because she makes no effort i text her saying 'even though i dont want this, i think its best we stay as friends', she was annoyed and told me how it isn't for the best and was pretty upset as well. I explained how she makes no effort and she told me how she doesnt express her feelings much.
Ive only ever been with her on her own once, even though to me there was nothing special about it, i could tell she was into me still. This was on the saturday, that night when i got in i text her and we was texting for a bit. On the monday i asked her to come cinemas wednesday, she agreed with a big smile on her face. tuesday and wednesday we hardly spoke as much, i wondered if she cared about the cinemas so i never spoke to her and chose to ignore her till yesterday, but on purpose so she could see i was ignoring her( i don't know if this was the right thing but it kind of worked

)
I got a text from that night telling me how pissed off she was that i was ignoring her, i kept everything short that i said to her, telling her that she dont care and such and that i dont see the point in trying with her anymore. She showed that she cared through the texts but not any other time.
This girl is not overly confident with boys and such, her ex cheated on her, although that relationship was always on a cliff anyway. She's definitely into me but i just want to know how i get her to show this, cause she only seems to show it when i stop showing that im into her.