I am really sorry for you. I cannot imagine the pain to find out getting cheated by a decade-long partner.
Like everyone says, you didn't do anything wrong here. And it is not stupid to trust your partner because that is exactly what a loving partner should do. If we always suspect our partner, Then it is a problem.
You are very right on the point that he should have talked to you about how he feels lacking in the relationship. That's what a good partner should do. He needed to respect you and talk to you about it no matter your reaction or opinion. But he didn't choose to do that and he chose to hide. That is all his wrong doing.
Take your time to rest and focus on yourself. I wish you all the best.
Like everyone says, you didn't do anything wrong here. And it is not stupid to trust your partner because that is exactly what a loving partner should do. If we always suspect our partner, Then it is a problem.
You are very right on the point that he should have talked to you about how he feels lacking in the relationship. That's what a good partner should do. He needed to respect you and talk to you about it no matter your reaction or opinion. But he didn't choose to do that and he chose to hide. That is all his wrong doing.
Take your time to rest and focus on yourself. I wish you all the best.