Paul's list of "bitter adult truths"

Paul's list of "bitter adult truths":

#1: Complete honesty is a complete lie
#2: Marriage is sacred only to those who have never been married
#3: Money is more integral to happiness than romantic love
#4: Every human being is a contradiction, some hide it better than others
#5: Never underestimate the tendency of human beings to act contrary to their own best interests
#6: For it not for the fear of getting caught, most of us would behave like savages
#7: Oral sex has consequences, most of them dire
#8: The older you get, the faster time flies until months pass like days
#9: There's no such thing as living happily ever after
#10: Everything gets worse

These all lead me to believe that he's cheated on his wife before, and also most likely lied about it to her.