Joke about it! I forget where I heard this from, but it was on a show..
Some girl was talking to a guy and said she expects a guy to spend X amount of dollars on jewelry for her, and the guy just got confused as if he was actually thinking about it.
Turn it around! Say "That's it? I want my girl wearing a rock that covers her whole finger!"
If shes hot, you'll get shit tested constantly. But the more time you spend together, hopefully you'll get to know her better and always sense the shit coming. Heck I shit test my girl just for fun just to see how they like it

. "Soooo, drinks are on you tonight right?". It's awesome when they say yes!