Help plz

I really dont know what to do plz give me help, here is my story, i will try to make it short

I've met that girl during my summer job. As soon as she started working with me, she was always close to me, giving hugs and everything. First thing i knew about her is that she just went throught a huge separation with her ex.

After a few weeks all the staff started having parties together and it didnt take long before me and her had some drunk action going on (kissing and etc)
and from that point we started seeing each other out of work.

At first she looked really down to be with me, but she was still in love with her ex. She was talking about how she felt about what he did for like a month. At the end of summer, at the final party i told her i had fallen in love for her but she said that she couldnt say it back because she didnt feel for me what she had for her ex.

Then we didnt see for like a month but kept texting about 30 times a day and talking on the phone at least 3-4 times a week. She had a lot of things going on in her life. Then we started seeing each other about once a week. Everytime i would ask her to do something she would answer that she has something to do that night, or that she had to study or that she had to clean her room.

I was really down to see her more then that but i dont think she was, allthough she said she missed me every time. After a month of seeing each other again we really got closer and i did the mistake to tell her that i loved her again and got the same answer.

Right now, i didnt see her for 2 weeks and she said she was to busy to see me but she also said that she was missing me. I told her that it was not the impression she gave me so she asked to do something lateron during the night ( the reason i couldnt see her that night was: she was sick). So i saw her that night and it was horrible, i feel like she wanted to give me a lesson.

And now, its gonna make 1 month i didnt see her and i really dont know what to do, should i keep going on, or drop her ?
i am deeply in love with that girl and i need her but i cant handle to think about her all day long all week long and to think about the next time i will see her.
please help me, sorry for the mistakes and sorry for the text lenght XD
thx for any answers