I have singles tell me all the time they want love to "just happen." Well, that can only happen if you are in a mental and emotional place to receive the positive attention of others.
I see it time and time again. A man whizzes down a busy city street and doesn't notice the attractive woman who smiled at him. Or the woman who is in such a hurry to get to the front of a line or into a subway car she doesn't acknowledge the person who stepped aside to let her through.