Too often, neurotypicals expect a perfect useful relationship from a friend. They like friendships to be easygoing with as much similarity between two people as possible. Therefore, they hold higher expectations for the other side, even though the other side shares that same expectation. Due to the absence of fulfillment, neither person makes connections or sometimes people can become unreasonably selective in the friendship process. The reason for this is that both neurotypicals and aspies often feel like outcasts around certain groups of people.
If this happens too frequently, the inclination to make friends declines. However, this shared dilemma can actually help to foster the relationship between an aspie and a neurotypical or an aspie and another aspie, if they are willing to give a chance for that to happen. After all, few things feel more reassuring than being able to take up your worst fears and issues with others, knowing that they will not condemn you for them.