Hello @kjk
Actually that is a very good question as infidelity is a form of emotional and psychological abuse that is a real assault to the mind leaving mental scars no less painful than physical. For some the emotional pain can be worse.
Experiencing infidelity by someone we love and trust is the height of betrayal - and it's repercussions for the victim can only be described as real pain akin to a dagger penetrating through the heart. It is shocking, one can't breathe, the emotional pain of such a violation is unimaginable and in my humble opinion no less of an assault to the psyche then a physical attack. I understand this as I have been close to others who have been through it.
Some are unable or unwilling to trust and love again robbing them of a full life of meaningful relationships. Some get angry and place the onus on the offender and move on as best they can attempting other relationships with understanding, supportive partners. Or some choose the very difficult path of trying to restore and keep the initial relationship with the person whom was unfaithful going. All resulting future effects caused through infidelity depends on the circumstances of the individuals involved. But one thing is for certain - trust is damaged and mental scars remain in varying degrees to deal with. I hear you.
I take it from your post that you are still in the relationship? That can for some also serve as a constant reminder of the trauma; if true remorse is not shown or attempts to right the wrongs aren't occurring in the present relationship that will hold back any attempts to heal and move past it. Again all depends on the circumstances. That can leave some in a continual state of emotional trauma and distress. Healing depends so much on the status of the relationship and/or what we are doing in the present.
Sometimes although the initial shock of infidelity wears off "the numbness that sets in" can leave us feeling emotionless/zombified for quite awhile. Unable to fully feel and fully live. That's the minds way of protecting from the full force of the trauma and suppressed grief remains. Is that how you are feeling? We are here for you if you need to talk about anything. So sorry for your pain. It's not fair. Sending you a warm hug