The last dating scenario I posted was a bit dismal. To remedy that, I'd like to share a great 2-part sermon from Josh Harris.
He provides some sound biblical principles for relating to the opposite sex as Christians. It's helpful for both single and married church members, but emphasizes the current dating situation in the modern church.
Part one focuses more on singles, and part two focuses on what the church can do to support them.
I couldn't find the transcript anywhere, but you can follow the link and listen to the audio file. It's quite user-friendly.