First off, I think you need to cool your jets.

Think about it. It's been a year you been going out. She's knows your dick, inside and out, know how to please you, sex becomes nothing more but the same, nothing ever changes.

What she says to you, you have to open your mind because it means something else. It's deeper than the sex, it's the emotions between you both that needs a little fixing of the sucres. And pressuring her to have sex in this situation only makes thing worse.

I'd say just relax the situation, stop worrying about the sex so much, and try to please her in other ways, not for the benefit of getting some tonight, but because you love her. In turn, you only get loving in return.

Also trying out some new moves wouldn't hurt.