Hey there,
I am 28M and have experience as being the alpha male in a few cuckold couples. It used to be less about the cuckolding aspect of it for me personally, I just stumbled into it and it was just fun for me to get to have sex with another man’s wife. That was my firsr experience and it was pretty tame.
However, in my new situation the woman has been much more interested in asking me to participate in the humiliation and dominating of her partner. After our first experiences together with me having sex with her and her husband masturbating in the corner, the next time she demanded that her partner insert my penis into her when we would change positions. Of course everything we did I was warned and consented to beforehand. I found even this more exciting than I thought. It made me feel even more powerful than I already did.
So when she suggested we take things further I agreed. The next time we met he was instructed to apply lube to my cock and to stroke it for about thrity seconds. This made me an absolute rock. I had never had such a kinky experience and the fact that it turned him on too made it that much more exciting. He was humiliated by his partner for getting hard while stroking a cock.