I always offer to pay for my half or if a guy paid for the first date, I offer to pay for the next one to be respectful. But I find guys who would take my offer up to go dutch on dates or let me pay for him to be either broke or not interested in me enough to want to impress me. So, I find it a turn-off.
I find it very manly when a guy pay for dates because it shows he can take care of his woman and provide for her.