I am not keeping him a stud- I tried to have him gelded last fall but he had an undescended testicle. I was told to wait until he was 2 and then he might possibly need surgery, but his brother was gelded at 2 and "appeared" to only have one testicle then, but the vet could feel it so it was there- I guess they are late bloomers! I'm hoping we won't have to resort to surgery for this guy. He's really very sweet and I don't believe his behavior is aggressive- it appears to be playful and I don't want to punish him for being affectionate- I just want to teach him to be more gentle.
You're familiar with how horses "play", yes? They buck, bite, kick, rear, run around, etc.
Now. You know how much that half ton animal weighs, right? And you know how much you weigh, right? Know how much easier it is to break a human than to break a horse? A LOT easier.
Horses don't understand "fragile humans." You treat them like a playmate, you will GET a "playmate" that bucks, bites, kicks, rears, and runs around. A hrose kicks another horse in the belly and that horse grunts, barely feels it, goes back to eating grass. Horse kicks YOU in the belly, you get several broken ribs and are hospitalized.
You need to get after him. You punish him gently and he WILL take advantage of you. And it won't be very funny when he finishes growing, trust me. Put some real fear in him. Make him think if he runs over you it'll be the last thing he ever does. May seem harsh to you but several broken ribs isn't worth his "affection".