From a psychological point of view, your girlfriend really has nothing to do with that man. It's probably just that she has a secret crush on some languages. Reason: You are not married at all, but you are still free. If you really cheat, you would rather choose a new love than an old one. Who didn't choose this way? Besides, your girlfriend is not a fool. She knows who is better for you or that man. If they are really determined, do you think it is necessary for your girlfriend to beg you so humbly? It can be seen that you are more attractive than that man to keep her. Their relationship is not ambiguous at all. If so, how can they regret it? That's something they want to regret. I think you know what I mean?
There are shadows in my heart, that's for sure. But I hope that every time you think about it, stand up in front of the mirror and say to yourself: I am the man who suits her best, keeps her best and controls her future best. Your shadow will soon disappear.