You should be who you are - nothing less. Why be like everybody else and then in a few years people are moaning, as they always do at some point, that "men don't behave the way they used to"? Many women aren't drawn to mushy period dramas because they appreciate a well made carriage - they like to swoon over Mr Darcy, Colonel Brandon and the like because there is something infinitely sexy about a courteous, well-behaved man who treats women like the beautiful creatures they are and romances them properly without having to slip rohypnol in their Smirnoff Ice just to get them in the taxi home at the end of a night...
You don't have to turn into a wet blanket just because you are trying to show good manners to a lady and treat her like she matters - mix it up with some 21st century fun and make your own version of chivalry