It wasn't until I told my wife that I thought F/F was a beautiful thing and thought she might like to try it some day. Then she turned and told me that she would like to see me sucking a big cock and dealing with a mouthful of cum. I wasn't sure if she said this just to throw it back at me or if she really meant it.
Myself and both women I married were already bi before we got married so no need to bring it up. I'm kinda amazed at the number of guys here who joined the M2M party because their wife suggested it; I mean, like, back in the 90s, I'd be in threesomes with a couple but I knew that I was there because she wanted him to suck dick and I was onboard with his initiation... but this seems to have grown a lot since the last time I ran into this. I've done the threesome thing and the hubby shocked everyone by blowing me - and sometimes wifey didn't have a sense of humor about it and things almost got very ugly. I guess that some wives just might want their husbands to find out what they go through when they suck cock - but when husband and wife were bi before they met, what's to bring up (other than giving each other permission to throw it down as needed)?
My girlfriend brought up the subject by playing a porn video she had rented, (yeah it was a long time ago). This video included an MMF scene. I was very uncomfortable and unsure of what to say, we had a few FFM threesomes and now she wanted to turn the situation around.
For me, she brought it up and I admitted that I would be open to taking dick and even sucking one. It was a great conversation that night.