I have approached dating as a process to identify, qualify, and ultimately partner with a single woman. The dating part is essential, but dating is not the goal. Sex is essential, but sex, also, is not the goal. Working to identify and explore a combination of these three factors, is how I am navigating my approach to finding my next long-term relationship.
As you look to build the long term relationship with a spouse, remember your kids are important, and in some ways, they are priority number one, but that will change over time. As you become less of a priority in their lives, as they move on to college and their own lives, you will be left with what's next.