<human>: Can you condense the text into three sentences or less?

me and my "gf" have a very complicated relationship. I will try to explain it quickly here. 
1. we both play tennis competitively and love playing together (how we met)
2. here parents dont allow her to date and she needs permission to hangout with me. (she will do it secretly but hates lieing)
3. because of #2 we keep our relationship a secret and dont even tell each other that we are bf/gf.
4. we are usually busy through the week but hangout almost every weekend. 
5. we text pretty much everyday.

here is where my confusing feelings come in. Im completely in love with her. I invest more into the relationship and I'm pretty sure we both know it. But if she doesnt text me,or if she cancels her plans with me or something happens where we cant spend very much time together (2 hour date turns into 30 minute date), I get extremely angry. I feel like im not important or that our time together isnt worth very much to her. 

I dont show my emotions or feeling about this at all with her. This is because If i expressed my anger, sometimes it would be unwarranted, and I have trained myself to not get upset with her (or at least not in person). In fact most of the time my anger and jealousy is unwarranted but I still cant help feel anger and mistrust about her when we are not together. 

My question is, am I going about this the right way? I dont express any of these feelings to her and because of this she is very happy with our relationship and thinks she can tell me anything (which i love). But its hard, I feel completely dependent on her and would love some feedback.
<bot>: Hide my feelings from my gf. gf is very happy with relationship. Im not so much but fear losing her over expressing feelings.