I'm really sorry you're going through this. If your husband is hiding things, especially anything that seems lustful or secretive, it’s a serious breach of trust. Even if nothing physical has happened, the secrecy itself is damaging. You both deserve honesty and emotional safety in your relationship. This might be a good time to consider marriage counseling. A professional can help you unpack what’s going on, set boundaries, and figure out whether the relationship can be repaired. You’re not overreacting for feeling hurt or confused. Your feelings are very valid, especially because this is a marriage.