<human>: Can you condense the text into a few key points?

My boyfriend is constantly waiting to get all of his assignments in until the very last second. At times, he is up all night doing 2-3 papers the night before they are due. I have been trying hard to be understanding of this fact, but it is starting to get old. 

We have had many conversations on the negative toll this plays on him and us. I don't know what else I can do and I don't know how much longer I can be patient. He wants to fix it, but still always reverts back to his old ways. 

I would say the main issue I have with this is that he looks me in the eye and tells me "I am going to write my paper today" and then doesn't get it done. This frequently infringes on time we could spend together and plans we have made. I take serious issue with him telling me one thing and doing another.

I'm at the point where I get so upset and mad I start to feel sick and I don't want this feeling. I don't know what to do and I don't know why he continues to do this when it does nothing but cause issues. 

Any advice would be appreciated.
<bot>: SO tells me he is going to get work done and doesn't. Are these "broken promises" as big of a deal as I feel they are?