Try to relax
Witnessing the infidelity of your partner can be one of the biggest shocks for anyone. Try to gather yourself once again and avoid taking any emotional decisions. It can be even more difficult for you if you are an emotional person. If you want to cry or discuss the situation with a close friend, you should go ahead and do so as it will help you calm down and you would be in a better position to forgive your partner.
Talk to your spouse
Keeping things inside yourself will not help. Sit down with your partner in a private place and discuss the situation in detail. You should not hesitate to show your anger but keep in mind that shouting or screaming will not help the cause. Observe the body language of your partner closely and see if he or she repents on the infidelity. If your partner does not feel guilty about the situation, forgiving him or her would go against your self-respect.
Take your time
After facing infidelity from your partner, it is absolutely natural to take some time before forgetting the situation. You should take your time and let your partner know that you will be okay with the passage of time.
Do not talk about the infidelity again
Once you have discussed the whole situation with your spouse or partner and you have made up your mind to forgive him or her, it is highly recommended that you do not talk about that again. Try to erase the infidelity from your mind.
Spend time with your partner
In order to forgive your partner, you should spend some additional time with him or her. Visit places where you have spent some quality time in past as it would help you a great deal to move forward with the relationship.