The Importance of Karma

I believe that karma is real and I've had my karma and I think people will get theirs too so let karma take care of them. There's also this gray area of messing up and making mistakes where I don't know how I feel about this honestly but there was a guy that messaged me who fell in love with two women at the same time one of them was his fiance and he didn't realize that something like this would ever happen to him. He feels like he went too far with the other woman it was this whole story and I really didn't know what advice to give him because he didn't seem like a bad person I think.