I did it with my first husband as a last ditch effort to save our marriage, but my heart, let alone any other part of my body, wasn't in it. After 2 years of faking it, we divorced and remain on friendly terms.
I was willing to try for him, but ultimately, only one of us were happy, so it didn't work.
Best of luck to you!
There are a few other threads floating around that may offer more insight. Maybe search using the keyword 'cuckhold'