Sometimes it is crazy how relationships work out. My girlfriend and I started dating in June of this year, and the relationship has had its ups and downs but we have known each other for a couple of years and been through a lot.
So basically this girl and I have known each other for a couple of years, but it wasn't until this school year (2010-2011) that I really became interested in her. She showed her interest in me back in December by inviting me with her best friend to an event nearby (sorry I'm being ambiguous, but I'm not giving out names or locations). She was holding my arm and making subtle hints that she was interested, but I didn't act on it. Well prom time comes around April, and
she asks me if I would go with her. I figured her and I were really good friends, so I said yes. But shit hit the fan really quick. Within five days she was ignoring me, not talking to me, avoiding me, and I had no idea what was going on. Every time I tried to talk to her she would be a total bitch and it finally got to the point that I flipped out on her and she called off going to prom with me. We were both super upset, and we continued to fight up until mid-May. It wasn't until early May that I truly realized I "liked" her, as more than a friend...which was the biggest reason I was so devastated we were fighting.
After a month of not talking to each other, we both finally found the time to sit down for a couple of hours and talk about what happened during April. She was freaking out on me during April because of "commitment issues"...in other words, she was afraid of getting too close to me. She was upset that she, in her words, "had ruined a good friendship" and wanted to make things better. We started texting again, and a couple of days later I let it slip that I liked her. At first she was definitely not happy about the news, but we went on a date to a parade a few days later and she said "no guy has ever been that sweet to me before". We started "officially" dating then.
Since then our relationship has been fulfilling but it is also very chaotic. She seemed to get over her commitment issues really quickly. She tells me she loves me and is, for the most part, sweet to me. However, there are several problems I have in the relationship that are eating away at me. She will be living in Arizona for the next four months as a university student while I am all the way in Oregon, 1300 miles away. The distance itself isn't the problem though...its the fact that she doesn't seem at all enthusiastic about texting me or using Skype to stay in contact. She tells me she loves me, but at the same time when I bring up genuine concerns to her she gets angry really quickly. I won't lie, I am pretty needy for a guy. If I go fifteen minutes without a text from her without prior notice she won't be able to text back I start to get worried and irritable. I always make sure to get back to her as soon as possible, but she just does not show the same kind of interest in me as I do her. She rarely tells me when she will be unable to text back. There have been several guys in her past, all of which treated her badly (by my standards). She did flings, not relationships. There was sexual activity but no intercourse or anal. I know it sounds silly that I am freaking out over not getting texts from my girlfriend, but if any of you have been in a long distance relationship that was formerly a mile apart I think you would understand how this is bothering me.
I tend to stress a lot about stuff like this, and I hate having people mad at me. Yes, I am a people-pleaser...I can thank my mom for that trait.

Am I holding her to too high of standards? For those of you who text your girlfriend/boyfriend, how often do you text? How many a day? I need to know whether I should be worried about her intentions or if I am just over-complicating things and getting worked up about something that might just be a small issue. I love this girl to death and I want to be with her more than anything, but the stress is really getting to me.