Is it normal that i give my business partner blow jobs and i have a wife

I love my wife and am the man that she wants. My partner's wife never wants sex anymore. I've been giving him blow jobs. I had never done this until I started doing it for him. I had the urge to try it. I like the feeling of being submissive to him and I make him feel like a man. I swallow his load everytime. I like it best when he's frustrated and I give him a blow job. Sometimes he tells me to give him one when he like that and sometimes I just do it until he explodes in the back of my throat. I love the feeling.