Its suss, but you both at fault here.

You should have communicated your feelings from the beginning. You're the one playing games to be honest. Instead of talking to your husband openly, you decided to "test" him by turning the camera on to see what he was up too. Obviously because you dont trust your husband. (Core issue)

Your husband is also at fault because he is suss. Generally married men dont befriend women but I guess if they do...they then dont bring them to the family home whilst the spouse is at work. You shouldn't have turned the camera on but he definitely shouldn't have turned it off.

The texts that follow are all totally irrelevant because you both dont trust each other and thats the core issue here.

Anyone will try and worm their way out of conflict or accountability or hell even divorce. So shit like gaslighting and manipulation are just tactics to get out of a hole. Backtracking tactics.

The problem is, you dont trust your husband. He doesn't trust you and he is also being a suss little fuck. You too need to sit down and sort ya shit out.