What do you do if you're still extremely physically attracted to someone but your actual relationship is bad?

So my boyfriend and I are always fighting. He doesn't understand me, and he's too stubborn to ever try and understand my feelings on just about anything. We have opposite views on life and pretty much every situation, too. He's a pothead and has lied to me about smoking in the past, which also really bothers me. Most of all, he doesn't make me feel special, and our relationship just isn't working. However, I'm still so physically attracted to him in every way possible. I'm obviously going to break up with him because it's in my best interest, and I need to focus more on school. Yet, what if we remain friends and I'm still extremely attracted to him?