Most Helpful Guy
Because he feels guilty for cheating on you.
But you know... Why do you care? Let him live his lie and move on with your life.
Most Helpful Girl
Cheating is the worst that someone could do to their partner, and it often leaves scars hard to remove... He will never admit that he left you for someone else, because it would make him feel guilty. He probably rationalized everything to convince himself (and you, and his female "friend") that what he did was right and a consequence of you two being "incompatible," "unhappy," and who knows what. Lame. Immature. Selfish. Liar. Unfortunately, it happens often... my ex did something very similar and he, too, would never admit it (although it was so obvious that he left for someone else!).
Relationships that start with a lie do not last... what goes around comes around. Be super happy that someone like this is out of your life. Who cares what he says... You know the truth, and that's more than enough to erase him from your life. Go no contact! Do not waste your precious time on him, someone better will come. ❤️