Do not ignore betrayal
Do not act as if nothing has happened, otherwise you will not be able to discover the problems that lie at the core of your relationship and that have led your partner to infidelity. There are certainly times when people cheat only for sex, but for the most part, betrayal comes as an attempt by the partner to highlight relationship problems. In trying to understand these problems, the chances of another betrayal occurring are not very slim. Things should not return as before, work to create a new, strong and fulfilling relationship for both.
Do not blame yourself
It is not your fault why the partner did not know how to communicate his needs. You are not responsible, you have not 'deserved' something like that, but that does not mean you should not try again.
Do not take revenge
It may make you feel better at the moment, but it will not solve anything. All you have to do is collaborate to be 'on the same page' again. Instead, wish for what you wish for, and stay away from it.
Do not mention betrayal to win arguments
The fact that he has betrayed you does not entitle you to use him as a card to get out of debates. "Well at least I did not betray you!" -at the end of each sentence, it is horrible and consider the relationship you thought you were starting to suffocate.
Do not speed up the 'healing process'
Take all the time you need to chew on what happened and let your partner know. You will ask a lot of questions and it is normal, you will hear the same answers a few times, but that is all part of the healing process. If your partner is tired of this situation, then maybe it's time to end it.
Do not think of his betrayal as the end and destruction of your relationship
Of course a betrayal is serious and hurtful, but once you have taken a deep breath think with pure logic. See how your relationship was before and after you discovered the betrayal. How has he treated you and above all ask yourself, "Are my emotional needs being met?"
Sometimes betrayal (depending on the type, circumstance and occasion) can serve the relationship well, if the foundation between you is strong.
Source: Bustle