What is a subtle unspoken expectation that often guides daily interactions within families?

The girl I'm with wants to get married. She is so much better then my ex in every way possible. Will it be rushing into things to get married to her already?
Have you ever had a "wrong person" encounter that turned into an unexpected friendship or interesting story? What happened and how did it unfold?
How can someone stay positive and continue their search after a promising arranged marriage proposal falls through unexpectedly?