Consent is usually the sticky point. What is consent? When you pick a bloke up for a s**g Kate ( theoretical question
) does he always say "do you consent to me having intercourse with you Kate?". Even if he does and you say yes, where is the proof that you said yes if you change your mind later?
I am glad I am married so don't do the picking up women/being picked up thing anymore, it's getting far too dangerous.