i think sharing is best but then i wouldnt like a man to sit there counting whose round it is and working out whose turn it is and how much etc, o to ask me for money at the end
if the man has said 'i want to take you out', that kind of implies they want to 'take you out' and basically treat you.
but if they ask if you want to have dinner with me , that implies halves - although i know both are a just turn of phrase so actually imply nothing - so you should always have money with you.
i have paid for nights out for my fella, but we've been together years so its not like a date anymore.