Okay fine. Why don't you ask? When you ask someone on a date ask them if they'll fuck you if you pay for dinner. If it's so obvious as to be assumed that buying someone dinner means they owe you sex just ask. If they say yes and they don't they lied to you and then you're point about being misleading stands. So why don't people just ask? If women get upset/offended and say no then you have saved yourself time and money. Obviously that assumption being such a normal thing it should be no problem just asking.It is not manipulative to intentionally tantalize with the promise of booty that you are in no way considering to offer, in order to extract dinners where the guy pays for your food in hopes of accessing said booty? Or is it not the sort of manipulation you had in mind in particular? If so, how do they differ, and why does such a hypothetical difference even matter at all in the first place? Isn't manipulation just, bad, in general.
(also, you did in fact reply lol, just not productively)
Secondly, if all you want is sex as a transaction there are women who will do that for you.
Seriously just because you took someone out on a date you still need to convince them that you're not some weird fucked up chode and maybe even go out on multiple dates which you are perfectly entitled to expect them to pay for some of. Like they can go on the date and because you come across as a desperate horny weirdo who thinks the early bird special entitles him to a first class ticket to pund Town they might decide that they don't want to have sex with you.