how to nurture your marriage

I got a call today from someone in the elders quorum presidency asking me to teach the priesthood lesson this sunday. the topic: how to nurture your marriage. I don't remember ever being married and don't have a lot of experience with this topic. Also, this is an odd topic for a group of single guys to talk about, but i do understand that it's important to think about now as preparation for later on. but still, i have no personal stories or insights about this, unless i want to talk about how to get phone numbers or plan a date, which would probably be best left to talk about after church (and with somebody who is better than me at those things). So, married people, what should I talk about? Single people, help me make something up, ok? Any ideas or insights would be appreciated.