The Girl elly is the typical person who cheated and when realize she screwed up she apologized. Well it's a one way of maturity but Cheating is not a mistake it is a choice and a sin. She did that to her self.
Mark: After my sister you're cheating on me with a dog?! Elly: It was just a one time thing! The dog started sniffing my crotch and you just abandoned me and and and...