Do not attempt to be rational

I've finally worked it out, a few years too late:
1. all women lie (they say one thing now, the exact opposite a few hours later, so ipso facto one of these must be a lie).
2. all women agree that all (other) women behave like this.
3. when you get into a relationship, your woman will tell you that she is different.
4. You cannot be rational about this, even if you have evidence. You must agree with her, and be sincere in your agreement.
5. Surviving the relationship: if you treat each thing she says as "true", you will go insane and your heart will break. You must remind yourself that she is talking shit and not take what she says too seriously. NEVER ever admit that you are doing this. In relationships, women are not rational. You must never attempt to have a conversation which you expect to be fully rational. Be prepared to be lied to, deceived and manipulated. Women WANT honesty from guys, but do not give it in return.

It is not fair. Deal with it. The only way of emotionally surviving is to not take your relationship too seriously.