Hi LLC18, sorry you find yourself here.
My WH had a ‘one time incident’ there are quite a few of us ONSers on here, but I agree that longer term (weeks, months, years) are more prevalent on this forum.
First things first, one time or multiple times, the hurt is still profound either way and is still a betrayal against your relationship, it is not somehow less of a betrayal because it only happened once and you should not be expected to feel like you are over exaggerating because ‘it could have been worse’ or ‘it only happened once.’ You should also not accept ANY blame shifting, you are not responsible for his decisions or his actions and you certainly did not ‘drive’ him to it. He knew it was wrong, he knew it would hurt you, he still CHOSE to cheat. That is on him.
Now to your questions;
Is it possible to get over?
Yes, but it depends on the people involved and the work put in reconciliation. There is no quick fix, true R takes a lot of hard work and it takes years. It is not easy...... at all, ever.
Yes, you can regain trust, but it is a long road and a hard one and it doesn’t come back easily, trust is earnt and once broken is a long, hard road to regaining it. You first gave trust easily and freely, he gave you no reason to doubt him or his loyalty, but now he has broken that and you have lost faith in his loyalty, actions and processes. Coming back from that is hard, he has to put a lot of hard work in and make sacrifices to try and regain what he broke.
No, his excuse is just that, an excuse. You did not contribute to his cheating, there are any number of things he could have done. Cheating is never an option and is not something a healthy person does. What he has done is shift some of the blame onto you, that is wrong and also not something a healthy person does and it is also not something a person who is excepting responsibility for their actions does. That is not real remorse, real remorse does not say ‘I am sorry I hurt you, but you bought it on yourself.’ It is much easier to say it’s someone else’s fault or that other people contributed than to look at the real reason he did what he did. To go to IC and explore the reasons for poor coping mechanisms or poor boundaries.
We often say things we regret, we should learn and grow from them. In my experience, if you don’t mean it, then don’t say it. In this case I suspect you said it in an attempt to hurt and shock your partner, but it was a lie and a manipulation and not a healthy tool for use in a relationship. Perhaps you need to work on effective communication skill? While what you said was not okay and you need to take responsibility for your part in that fight, it had nothing to do with his cheating (though he used it as an excuse) and should be treated as a seperate issue.
Of course he was wrong to blow you off, head to another town and cheat. Has cheating helped your situation? Was it ever going to help your situation? No, it’s much much much worse now isn’t it. That’s because it’s not the choice a healthy person makes in a relationship. I am concerned that the first time you have a major fight, that your partner off and cheated. It really points to poor coping at the very least. What happens when he gets stressed in the future? What does he do then? In short, this issue is painful now, but if he doesn’t address these issues than I am concerned that in the future you may find yourself in the same position again.
Personally, with hindsight, if my WH was a WB and there was nothing other than affection tying us together than I would have left. We are over 2 years out and heading towards desperation. I don’t trust he won’t do this again, he isn’t really putting in the work to having proper firm and healthy boundaries or why this is was his reaction under stress and how to develop new mechanisms for coping that don’t involve using someone else to feel good. Every story has its nuances, the people are different, the setting is different, but the main plot line is depressingly the same. You said something mean, so I cheated. You don’t love me so I found someone who does. You don’t understand, we are soulmates, no one has ever understood me like they do ect.