Will my stallion and Gelding eve..

Brief：
Stallion is 3.5 yrs. old and Gelding is 10 yrs. They fight with fences between them. Will they EVER get along? I dont have any mares or other horses. .. 

Stallion is 3.5 yrs. old and Gelding is 10 yrs. They fight with fences between them. Will they EVER get along? I don't have any mares or other horses. Just the 2 of them. Any idea how I can get them to get along in same pasture? Or is it just wishful thinking?

Take it from a horse owner, there fighting to establish dominance between them. You can either block them off with fencing they cant see through, separate there pasture areas, or if all else fails you can geld the stallion. If your not breading him I would highly recommend this option.

Good luck. You have no control of whether they will get along ,or not. A stallion will never accept another male, gelded or not, in his territory. It's just instinct. It doesn't matter if there are no mares present, in the stallions mind, there could be. In a herd, there is never more than one adult stallion, and that's an instinct that humans cannot change. That's wishful thinking. I can just picture it:

Gelding: "Quit being such a dick!"

Stallion: "You're such a wus - what's the problem, wussy boy?"

That's how it is, isn't it? Which one has the b0ner? Geld the stallion. it's plain instinct for the stallion to do that. If you are breeding the stallion then seperate the paddocks. It depends. Stallions, by nature are dominant animals and will fight for control. Gelding, by nature are docile and usually will not fight. Both, by nature are social creatures. One would think they would be OK together, however.. Your gelding being 10 is set in his ways and has probably been the "boss" of his area for a long time. He sees your stallion as an intruder to his area and a rival for control. Now, I don't know how long you have had your stallion, but chances are he was not left to socialize when he was young. Most colts are separated to only interact with each other, or left alone. The stallion I had for 15 years was left in a heard situation while he was young and therefore was used to company. He always had a companion, either my gelding, a mare that he had been bred to, or he was my best babysitter for his "kids" that were weaned.