I'm riding an older appy gelding at a friend's house. She has had him a month and he is already very attached to her mare. If she gets out of his sight he screams and hollers!! A similar thing went on with a 3yr old gelding I had there. It got to were I couldn't do much with him because of the mare. I have had other horses that were pastured with geldings only or mares and geldings and had no problem with them getting sour. Is it because its just the two of them or is it a mare thing? Anyone have any ideas about how to stop this behavior? We can put them in separate pastures but hate for them to be alone.