As a man why are you shocked? Only bird brained females can’t understand that a man gets tired of the same pussy after a while. It’s instinct. It’s the thrill of the chase. Nothing like fresh new pussy , it will actually make your relationship with your main one better to have side pussy because the main one starts not wanting sex as much after 10 years so you can stop forcing her to suck your dick and go see the jump. The main broad becomes more of a long term partner