Long time fantasy, 1st progress since Covid

Hello 54yo, Married 35yrs, WM here.
I've had a cuckold fantasy for about 23 years. I suggested a little bit of the fantsy to my wife 20 years or so ago and was told NO! In 2018 I brought it up again and she was tentatively receptive. We went as far as texting some guys, had 2 successful public meets that didn't go anywhere and had several meets planned where the guys flaked. Then 2019-2021 happened.

So a few months ago I made it a point to start eating her out every chance I got. I asked her to start demanding "service" when I was tired, or sleepy, getting ready to go somewhere, etc. She did it once. I work 12hr swing shifts in a HOT environment. I had come home after several of those shifts and went to bed. She woke me up after a couple of hours and told me to go down on her. YES MA'AM! HAPPILY!

I also explained that I have a SPH fetish and asked her to start saying SPH things to me which she did while telling me made up stories from when she was in college. For the last 10 years or so, between getting older, stressful job and being porn sick, it has been hard for me to cum. With the wife saying the sph stuff and telling me that she had cheated on me in college and I had unknowingly eaten multiple creampies, I went off like a geyser. She was impressed and happy.
So every time we have sex now, she tells me stories and belittles my manhood. And she is getting better at it too. She is getting past the shyness and the not wanting to hurt my feelings.

The last story was about the car salesman that sold her a car 2 months ago. She said he was a handsome Latino that wouldn't sell her the car until he bent her over 2x. More geyser.
We've had more conversations about it and she has said that she is intrigued by the idea and that her idea of it is to go on dates while I sit at home. In my mind I've always prefered threesomes about 70/30 over dating. But I'll be happy as all hell to enjoy some cuckold angst if it actually happens. I can see her in my mind coming through the door, bed head, makeup mussed, smelling of sex, telling me I need to lay down because she has something to give me. Damn.

So this morning she called me (she is working 4hrs from home) and in the middle of the conversation (I keep trying hard to talk about stuff other than cuckold cuckold cuckold) she says, "OH! BTW. Last night I masturbated and what I was thinking about was us in a 69 while a hung guy was fucking me from behind."
OMG. I am over the moon that she was "buying in" to my fantasy and that she was using fucklicking in her mind. I've told her I want to eat her creampies but never that I wanted to try fucklicking.

I have high hopes that we can get closer to fulfilling this fantasy.