There are adults in the world who do not appear able to make a true commitment to their significant other. There are many reasons for this circumstance, and it often takes on many different forms. Some people claim they must wait for a certain event to occur such as a parent passing on. They cite the need to take care of their parent because of a promise to their deceased parent. Others are simply comfortable with the status quo, and they see no need to advance the relationship.
Few people are really happy when their partner fails to make a true commitment to them. They may continue to see them, but stress is a factor as the date for moving in together or getting married is continually pushed back. Friends and family will often comment on this lack of advancement, and they often encourage their loved one to find someone new.