I was recently in a conversation discussing how people treat each other, and it came up that the big problem, these days, is that there is substantial disagreement as to what a human being even is. Ideally, the first question that a person should ask after “how should I treat this thing” is “what is it?” A person should treat a human being, a dog, and a cell phone differently because they are different things. So what, then, is a human being.
The Christian answer, from which one kind of answer about how to treat people follows, is that human beings are contingent beings created out of love by God so that he can give us more, and he put us in the same time and space so that we could take part in the act of creating each other (every time one gives food or knowledge or whatever to another, that is added to his being, and so one is becoming part of God’s act of creating him). Hence we should love other human beings, i.e. will their good for their sake.
The atheistic answer to “what is a human being?” is very different. The more accurate but less common answer is, “A joke with no punchline that no one has told.” or “A pointless illusion that no one is seeing.” More common, however, is to go with the creation myth of evolution (as distinct from the scientific theory of evolution, which doesn’t get enough attention): DNA wants to reproduce itself as much as possible and so it created us to do it. All that we call pleasure and happiness are just carrots that our blind and stupid master dangles in front of our faces to try to get us to do its idiot bidding. He were designed badly and will fall apart into nothing after a while. Fortunately for us, our master is blind, and we can sometimes trick him into giving us the carrots when we only pretend to pull his cart. Contraception is probably the best example of this; we can get the pleasure of reproduction without having to pay the price of reproducing.
So how should one treat human beings, if that’s what they are, and what happiness consists of? Being a human being oneself, obviously everyone else will either be a fool (in which case they are easy pickings) or will be trying to trick one into giving them pleasure without paying for it. So look out for the fools and try to trick them, while at the same time do your best to avoid being tricked by the people more clever than you.
And there you have modern dating in a nutshell.