Ready to settle down?

When Mike met his girlfriend he wasn’t looking for a serious relationship.  Now that they have been together a year, he thinks she is the one.  He is happy with the relationship, he just doesn’t know if he is ready to settle down and get married.  What makes someone realize they are ready to settle down?

After you have played the field for a long time, do you think it is harder to focus on one relationship?  What happens when you meet someone wonderful but you aren’t sure if it is time to be exclusive?

Single people are told all the time that when it is time to settle down, you will just know it.  Do you think there are signs that tell you when you are ready?