I am mastrubating when my wife is sleeping

I love having sex with my wife but mastrubating is something different. I can’t describe it exactly but it makes me feel different and free. I am surfing on Reddit, watching nsfw things, playing with my dick and I am doing it almost for one hour. Sometimes I am talking with stranger girls. and sending our love porns each other, cuming together. After I cum, sleeping feels so good.. Even if I have a sex with my wife, I am cuming before sleep. It is like a passion for me. Btw, my wife knows that I am mastrubating, she lets me do it.