NEED REAL HELP GETTING MY CONSERVATIVE GF INTO THIS

I am 24 y/o in East Tn, with a 25 y/o gf. I want more than anything
for her to open up to this lifestyle and cuckold me fulltime. i have
brought up several times that i wanted her to open up sexually, and
that i wanted to see her with other men. She always has the same
response which is her reminding me she lost her virginity to me, then
saying its nothing shed ever do, then says she doesnt even think about
other men. Which is BS shes human, right? Well im desperate i want
this more than anything im willing to do anything, id even give up sex
with her for this. some may say maybe im with the wrong woman, i love
her andd i want this with her. So if anyone can help id appreciate it.

thanks very much