Yes, please somebody answer this question, because I have no idea either. They're obviously mother and daughter (aren't they?) but apart from that, I got nothing! Is it just an excuse to have two hot women in the same video?
SOmething to do with he's going out with the daughter, but he is attracted to the vulnerability of the mother, and starts to have an affair with her and ends up chosing her over the daughter...
basically you know those girls who at some point we all fancy even though they are actually not very nice people but though out there life there will always be someone to love them