Who will send my wife a message about my infidelity?

The cheating partner or someone close to your wife will send cheating messages to your wife, because only the cheating partner and your wife have conflicts of interest, and those close to your wife will stand on your wife's side, so both of them will send cheating messages to you, which is the most likely, but I suggest you go back to your shore as soon as possible to confess, otherwise the outcome should be bad.