In the last few years, especially, men have felt more unsure of the right approach than ever before because of the widespread downer on sexual harassment. This may mean that they are somewhat de-skilled socially in the sensitive situation of making a potential new relationship via a first date.
Men now worry whether a hand on the knee or an arm around the waist is harassment if the girl hasn't asked for this kind of attention. It makes men feel awkward on a new date whereas the woman is newly empowered and feels much more able to share control of what does or doesn't happen on a date.
