It is if she says it is. That's the whole point, you don't decide, the circumstances don't decide, only she can decide.
My point was that I would hope I don't have to ask permission after 5 years without it being sexual assault, therefore whether that action is sexual assault is context dependent.
That said, this book advocates doing physically violating things to all women you would date in a short term time period, which is the kind of thing a serial rapist does.
Do you need to read a how-to book in order to seduce your girlfriend of 5 years?
The answer is yes, everybody needs to become much better seductors. Why? Take a look at the divorce statistics and then imagine what they would look like if people were receptive to their parters needs (and actually cared about them). My guess is low, single digits and almost no messy divorces.
Regardless of that, the book is not about managing long-term relationships. Ostensibly, it's about how to get relationships started in the first place. Therefore, whether a given interaction may or may not be appropriate with a girlfriend of 5 years is irrelevant to the conversation. That was my point.
Is it sexual assault if I do that to my girlfriend of 5 years?
In many contexts it would be sexual assault, but in many it wouldn't be. I think you're just assuming it's sexual assault because you don't like the idea of a book that teaches people how to "pick up women"
FYI, the context behind that sentence is:
> offering advice on what to do AFTER a man has met a cute girl, gotten her phone number, gone on dates, spent time getting to know her, and now are alone behind closed doors fooling around