Love It But Hate It

So here it goes… I’m addicted to cheating on my gf of 10 years. We have amazing sex, always trying new things and spicing it up in the bedroom yet I still always want to cheat. Whether is a bigger girl who is blowing me in a parking lot or a smoke show that I find at the bar I can’t help it. I love it it’s such a rush. One of my biggest turn ons is eating ass and sucking toes, so the second I see a sexy girl in heels my mind goes straight to the gutter and I can’t stop myself. I know I’m a terrible person but my gawd to I love it. I usually only hook up with a girl once or twice but I have a couple girls who I keep going back to (yes they know I’m in a relationship which makes them want me even more) I love my gf but also love the randoms and especially milfs. What do I do here?! Keep in mind I’m always working out of town..