I cant stop fantasizing with women

I am married for years. Every ti me i have sex, almost always i fantasized and close my eyes think of huge breasted women im sorry if im to out there but i imagin eating them out and omg much more. I love my husband i cant imagin without him so no i dont want to leave him for a women i just really want to experience having sex with a women like wild sex. what do i do.?????? I can easily hook up with beautiful ladies but im scared and dont want yo cheat amd i even mention to him for a three some but he dosnt want to.