guys thing that supper and a few drinks entitles them to sex
I suspect most guys don't think that at all.
Of course, women that let a man buy them dinner and a few drinks because they wants a free dinner and some drinks and have every intention of telling him to fuck off are nothing to admire either.
Women that refuse to sleep with a man because he invited them to share the costs of dating deserve to die lonely too.
Yeah, I can understand a man expecting women to be a little more honest and sharing. Luckily these days that's more frequently the case.