Changing schools and friends is hard on children and can often make them desperate and lonely enough to form closer ties with a sibling.

Dating is probably the most important aspect of a single person's life.

If you don't understand how a woman could both love her sister dearly and want to wring her neck at the same time, then you were probably an only child.

Sex is probably the most fun you can have in life without gaining weight or having a hangover the next day.

Almost everything can be construed as sexual harassment depending upon the way it is said. One general rule of thumb is to think of your female co-workers as you would your sister. Yes, she is a woman. No, she is not a sexual object. Yes, your parents probably like her more than they like you.

Single people slip out of the dating market for many social, economic, psychological, and ideological reasons including marriage, illness, bankruptcy, job promotion, exhaustion, and common sense. Inevitably, however, they return because of divorce, boredom, loneliness, and memory loss.

every one of us possesses a gene predisposing us toward rivalry, competition, and fits of envy with any past, present, or future siblings.