Do you think once a cheater always a cheater, or do you think they can actually change?

I’ve learned that nobody ever really changes. They may soften their rough edges, but generally people are always the same. I used to think I could fix people that I really liked that had some issues that would normally be dealbreaker. But I’ve learned it’s best just to take a pass. This goes for cheating or any other thing that one would think of has a dealbreaker in a relationship. Cheaters are best left to be honest about it and find an open relationship.