I am a cuckold looking for a bull for my wife

I am a married want to be cuckold and my wife will not cuckold me. I have 4 different cock cages I wear when she wants sex but she will not take on a lover. She did try 2 different BBC just before we got married but would not after we got married. I got so turned on by watching the BBC slip into her little white pussy. Please help suduce my wife.