I'm planning on dropping a class that my friends are in
Is there another class that you want to take instead?
Yes, my bf is taking it and I want to spend more time with him.
Spending time with your boyfriend is nice but it is not good to drop everything and to leave your friends hanging. It will hurt their feelings and you might lose their friendship.
I don't care. I want to spend my time with my bf
It's understandable to want to spend more time with your boyfriend, just make sure that your friends don't have any hard feelings about it. If your relationship with your boyfriend ends, it'll be good to know that you still have friends to support you.