Some are single because they choose to be, but then you have others who date and may have come across someone great. The chemistry is there, they are twin flames and they have the same values, but he or she is just messed up, so the person bounces only to be in misery and never finding that “perfection” that they are looking for.
This is where many default in the dating world. For one, you need that foundation of a solid friendship. You guys need to be friends with each other because this allows you to be comfortable with one another. This creates and builds trust.