Something which was not brought up in this discussion is what could contribute to a male being confused as to whether "she wants it". IMO (mind you it is only an opinion), many males have a need for instant gratification which may very well impair their ability to apply an objective interpretation of their female partner's verbal and body language communications. The need for instant gratification triggering a subjectively induced interpretation, one leaning towards the fulfillment of his need.
Other influential factor being how different female sexuality is from male sexuality. Most males having a 100% guarantee that they will experience an orgasm during intercourse. Which is of course not the case for many females. Females who will need efforts on the part of their partner to insure she will experience pleasure. Of course in casual sexual encounters, there is a high potential for those efforts to not be part of the male's willingness to. Usually, long term partners are far more familiar with each other and mutual will to please each other is part of the entire package for a mutually satisfying romantic and functional relationship. There is usually no confusion as to whether they are both mutually consenting to sexual intimacy while they work together to make it pleasurable for both. Of course there are always exceptions, but generally both partners expect the mutual willingness to please each other rather than one partner focused on instant gratification and becoming dismissive of the verbal and body language of their partner.
IMO males who are not driven by instant gratification but are part of the delayed gratification group are going to be far more alert to a female partner's body and verbal language. She would not need to repeat "yes" at every step or give a "firm no" for him to pursue or disengage. He will also not assume that because she is willing to make out with him and engage in petting , it can only mean she wants to have intercourse. Delayed gratification males enjoy very much leaving it at making out and petting rather than engage in intercourse.