<human>: Give me a shortened version of the text

My partner and I have been together for seven years in a semi-long distance relationship. She lives about an hour and a half away from me, but we have always had an agreement to see each other on Fridays and weekends should our schedules allow. Of course we have had our disagreements, our good and bad moments, and we've always  resolved our relationship problems within a few days. But this semester is different. I am halfway through my Masters program and the workload has taken an incredibly heavy toll on me, with my studying, departmental and multiple project works occupying the majority of my time. Likewise, it is also negatively affecting how much time and effort I put into our relationship.

This past week we got into a big fight because I told her I wanted to focus on my school work two weekends in a row, and now we have not spoken in a week except for a handful of curt text messages. In our seven years together this has never happened. Tried to call several times but no answer. There is no doubt I love my partner with all my heart and I want our relationship to hold on. I'm at a loss and heartbroken, though. Not sure where I'm getting at here. It hurts to see her hurting and angry with me for something I want to do, with work that needs to be done in order to move forward in my program. Am I being selfish? I would love suggestions or feedback if anyone has been in my shoes before.
<bot>: Currently in graduate school mode and not putting in enough time in my relationship, which is hurting us. How do I resolve this?