Re: Bit of a specific situation (Korean girl)
Actually, that's a great idea. I had the conversation with her about dating differences in Korea and my country and it escalated nicely. Especially if you start casually talking about sex. Do it genuinely, out of genuine interest (not "just to get her").
Since you're basically asking "how can an American guy date a Korean girl considering this and that", she will think about it, butyou still have plausible deniability, which is nice
Seduction is a martial art. Reading books and talking to experts is important, and helpful. But you won't progress unless you go out there and fight.