Some people act like the social dynamic where men are sexually agressive is solely the responsibility of men.
Most surveys I’ve seen suggest that the majority of women expect men to make the first move (always). This leads to an environment where men are to a degree trained to be sexually agressive.
This doesn’t excuse male behavior. But the road to a more balanced society likely requires changes on both sides.
Note, this depends on how I feel, as it's my wallet. Some people would never be okay with others taking money without asking. For me, at least, there's a small group of people I'd be okay with taking my money without asking.
Now, let us postulate that you think you are in that group with wallet access, but further postulate that you, in fact, are not. You think that I like you more than I actually like you. Even so, if you "confidently" grab money out of my wallet without asking, you are committing a crime, even if someone else performing the exact same action, someone I liked more, would not be committing a crime.
My point here is not to compare kisses to property, of course, but to point out that there are other places in criminal law where the perceptions of the victim and only the perceptions of the victim determine if it is a crime or not. In most of these cases, there's a strong default; by default, it's my wallet, and you can't take the money out without my say-so. By default, it's my body, and you can't touch it in a sexual way without my say so. Yes, you can make your assumptions as to your status, and if you are correct? that's cool. But you do so at your own risk. If you don't want to take that risk, you are free to ask.
If asking is enough to kill romance then it needs to die in that instance. Try again with someone else and if that someone else actually likes you they'll just think of you as considerate.
Tell us, how do you normally determine if she wants to have sex? Start dry humping her because you are embarrassed to ask?