I am with unaluna on this. He has been driving you to and from your classes, not because you cannot drive but because you don't want to drive in the dark? It's more than many other people would do for their significant others. He clearly isn't selfish. You now want him to stay in your sisters house and commute far and you are upset that he doesn't want to. Honestly i really don't understand the issue. And I am not stupid.

I swear i don't get this. Sometimes plans change. Just stay and take care of fish and see him later. Or drive yourself back and forth, if he can drive back and forth then you can drive to see friends from your sisters house. If you stay at his place for 4 and 5 days, it's not like you never see him.