You've totally missed my point. Tell me what you think a 'mature' interpretation of sex is. because I will argue it is whatever mature people think it is. And frankly I am arguing that there is nothing immature about male attitudes to sex; there is simply a disjunction between those attitudes and what women want us to think. And that there is nothing intrinsically virtuouis about altering our games to reflect a lie.
Quite simply, not being filled with outrage, shame, disgust, nor giggling, forcing the subject, or being too outspoken. Both extremes of the spectrum; the conservatives and the slutty are immature attitudes. It exist, it's natural, it shouldn't be that big of a deal.