ANSWER:
Forget about Allah punishing him or not. Worry about your own self as what you have done by having this affair is totally wrong and sinful.
This kind of relationship is absolutely prohibited in islam and you’re sinful for continuing this. If you don’t want Allah’s wrath on you in this dunya and the hereafter and if you want Allah to pardon you, you must immediately stop all communication with him immediately and block him from everywhere besides repenting sincerely.