<human>: Can you summarize the given text in a few sentences?

My GF is in school to get her doctorate, has next to no free time, struggles with anxiety, and is a solid communicator. I have a cool job with a decent amount of free time, and am willing to admit to and work on my weaknesses. She's under so much stress to perform at school that she often can't be herself - on the rare occasion that we can see each other she's usually too stressed to enjoy it. This makes me feel un-wanted and causes me to withdraw emotionally. I'm aware when this happens and know I should cut it out but there is an illogical side of my brain that wants to be a bitch until I'm understood and feel wanted. We've both got things to work on. In my case, these "tantrums" are not okay - as an emotionally expressive person I probably show my love and disappointment too much. What advice do you have for me?
<bot>: How do I learn to keep myself from emotionally withdrawing when I feel my GF is not as into our relationship as I am?