So pretty much the same as the history of most countries, including the US? Cool story bro.
coming off as nice isn’t an issue, but you just have to be honest. you want booty, not friendship (im presuming) but if you never make it clear you want booty then you’re almost always gonna end up being just a friend.
stop beating around the bush and be straightforward. if you want her let it be known, and if it isn’t mutual, move on. women respect your honesty more than they respect you pretending to be a friend in the hopes they’ll fuck you.