40[m4m] DFW, Texas: Enjoy talking about my gf with other guys

hey, my gf, 37f, and I have been on and off for a few years. She's 5'4, black hair, fair skin - a milf type body. I have always wanted to see her with other guys but shes not sold on the idea. It will take a while longer but slow and steady win the race, as they say.
Rather, I enjoy talking to other guys about her getting honest and detailed feedback. I love hearing both the good and bad , as long as it's honest.