A Girl that I adore and care for, feeling unappreciated and isolated

Hello everyone this is my first time posting here and I would like your opinions and ideas on situation I am currently in. There is this girl, who will remain anonymous, I'll call her Jane.

I befriended Jane last year, I felt complete and utter affection and adoration for her skills, talents and beauty. Over the course of few months I believe we became good friends, I also grew strong feelings for her love and companionship. I am usually the solitary type, I don't enjoy hanging out with big groups, nor do I care about a social life. But, Jane on other hand I felt was person I could always talk to about really anything. I felt comfortable around her, which is saying much since I am usually very anti-social.

It was her birthday not too long ago and I made her a gift using graphic software, before I gave it to her I needed to make sure it was good, so I showed it to my friends, who are in graphic design, they all claimed it was beautiful. These guys are always honest with me by the way. When I gave it to her, through e-mail, she expressed gratitude for having such a great friend and told me it was one of best gifts she has ever received, claiming she was near tears. I also gave the gift right at midnight, beginning her birthday to greater my showcase of appreciation for her. She repeatedly tells me that I am awesome; I am the best and very sweet.

Now fast forward a couple weeks later, she doesn’t say anything on my birthday, no gifts, no response, nothing. She also has another friend who has the same birthday as me, but she greeted him with a Happy Birthday unlike me. You might be saying maybe she forgot, no she knew when my birthday was because she asked when it was a week before the actual date. Now you might say that I am paranoid, or being too analytic, forgive me if I am, but I am currently doing a mathematics major it is what I do, but I feel that
I am not, I feel she basically uses me as tool.

Why would I say that? Well Jane was also doing the same major as me, until she dropped it because she found it too difficulty, but she was still required to finish some courses in the program or she would have been kicked out. I helped her through the grieving process, her work and a recent break-up she had during that time period. I constantly checked if she was ok and took her out to get her mind off things (I even paid for her food time to time). Presently, we are now in two different programs, so we don’t see much of each other as we use to, but I see her when she needs my help with her course work or when she needs a favor. I don’t have problem with this, but what I do I have problem with is that if I ask for a favor, or ask if we can hang out she says she is too busy and can’t. There was moment this year, where I felt insanely depressed, due to I dropped a course, because of a low mark, and I was doing really well in the course until the exam. I asked her if she could come over and talk, I couldn’t believe it, but she said she was too busy. When she was in a similar situation I would fit her in my schedule no matter the case. I also once asked her if she would like to go to a movie with me, she replied of course, but the week we were suppose to go she canceled because she was too busy. I am okay with her being busy and all, maybe I have better time management skills and she is not really good in multitasking, but here is the reason I feel a tool to her, the week she said she was too busy to watch a movie, she watched the movie anyways without me. She lied to me and I have feeling she does it a lot. There was even moment where she wouldn’t return my calls or talk to me for about 3 weeks. I was so confused, until she finally contacted me, asked me how I was doing and wondered if I could help her with some calculus. I surprisingly said yes. Why would I say yes? I felt lonely and had an uncontrollable urge for her company again. I helped her and from what she tells me, she did well on her exam. I told her I still needed a place to live next term, she willing, I didn’t even ask, gave me the contact information to the apartment she will be living in next term. I got a suite right above hers. She told me that she was super excited that were going to be "roomies" and she couldn’t wait.

Now presently she is not talking to me again, I feel she is ignoring me and she doesn’t mention what happened on my birthday. Each time I met her though, she seemed happy and always hugged me before we part ways. I am so confused, I don’t know why she is doing this to me, I feel she does know what she is doing, but is indifferent. Never in my life have I experienced such coldness. I want to forget her, ignore her, tell her how I feel, but still I want her to be my friend and not disappear from my life.
Any Help/Suggestions please! This is driving me nuts.

P.S: she is a model, and sometimes feels insecure, but I always tell her she is beautiful no matter what anyone says and then she hugs me and calls me so sweet……>.< I have never felt this way for someone in my life.

Remark: re-reading what I wrote I really do feel like a tool to her and that she is only using me, but I can't believe that such person like this can exist and if she is I will have a hard time letting go, because of all the effort I put in. Tweet