Is My Dad Cheating?

I think he is..and you should tell your mother about what you've seen and how's he been acting and how it affects you. I dont agree when people say things between parents arent the kids concern, because a family is a unit. when someone in that unit does something stupid then the whole unit suffers. if he is cheating, he is selfish and that;s not fair to you and your mother. I think you should sit down with your mother immediately. Good luck!