2 galdings???

Question
Last year April my parents bought a farm, with the farm came 5 horses, they were not very familier with humans but in time we have been able to ride them. In August we galded the 3year old stalion (Butch), which was ridden 3times but threw all 3people off. Since then me and him have really bonded, he comes when ever i call him and he is lovely to ride. In October my father bought a horse for himself, also a galding, 6years of age(Plum). But my Butch keeps on attacking Plum!! He gallops off and runs after Plum, untill we can get one of them in a camp and the other out. They run through fenses and all they are doing is hurting themselves. But i dont know how to make them like each other, Plum does nothing to Butch, but Butch has to go and attack Plum!!? Why? Do you know of any way that i can get Butch to stop fighting? Or do we have to seperate them all the time?
PLEASE if you have any info at all be it big or small, please help me!!!
Thanks a ton!!!!!

Answer
Hello,
You gelded Butch at three years of age.  He had already reached sexual maturity.  Horses that are gelded when they are older, chances are they will still keep their stallion-like behaviors.  Butch is behaving how a stallion would act, which is normal.  The best thing that you can do is to seperate them.  I hope this works alright, email me if you have any questions or concerns.

Kathryn