I'm going to break up with my girlfriend because she's not intimate
Is it because she won't have sex?
Yes. I want her to be more into sex.
Sex isn't everything to a relationship but it is important. If it bothers you that much then maybe the relationship isn't for you.
I want her to be broken so that she realizes its not that fun without me.
Hoping for someone to be miserable because they didn't meet your demand is cruel and sadistic. Just get over the fact that the relationship just didn't work because you're two different people. There is zero reason to make someone feel bad about it except if you're trying to be cruel.