I believe you because I have the same type of marriage. The difference is that I was cuckolded and discovered my true self years ago before we were married. Back when we were just in high school my girlfriend(wife to be) knew I was cuckold material. I was submissive to her then and my tiny cock was laughable. She told me straight out that if I wanted to be in her life that she was going to fuck other guys and I needed to get used to it. Actually I loved it. How could I turn her down,she was way,way out of my league. She often teased me or encouraged me to wear more feminine clothes,which I did because it amused her and seemed to draw us closer. She called me her : "Little sissy pants" and her and her gfs made sport of me. She also liked to flaunt her date in front of me and make sure I knew she was giving it to him. This set the stage for our marriage. I like your plan for the Las Vegas marriage. You can be their little "ring girl". Make sure you are dressed appropriately. When we got married our best man came with us on our honeymoon and consummated the marriage. They slept in the bridal bed and fucked all night while I stayed in the sitting room on the sofa listening to her moans of pleasure. I wasn't even allowed to fuck my own bride on our wedding night! He is now her steady lover and every time he visits it's a re-enactment of the honeymoon. I'll bet you are excited that he is moving in. I hope you will be able to hear them every night from your new place. My wife's bull doesn't live with us yet but I did get kicked out of the master bedroom by him. He told me that the marital bedroom and my wife were off limits to me if he was there or not. I'm not allowed to use the guest room so I had to make a small 12x12 bedroom out of a walk in closet across the hall and put in a youth size bed to ...... in. They told me the tiny room and bed matched my status. I guess it's true. To further humiliate me he made up a sign that says sissycucks room and put it on my door. My wife jokingly said if I didn't like it I could grow some balls and a proper cock and stand up to him or I could kneel and submit to him. I knelt and bowed my head in front of him and submitted. That sealed the deal and changed the way my wife looked at me. I know what you mean about how it just feels right to wear panties and dresses. My wife has me do the same thing and it really puts me in girly mood. I love when he comes over and I'm in something feminine. I feel and act so much more girly when he is around and my wife really gets off on that. She loves the contrast between her man and her sissy.I have posted a fair bit about our story on here in other posts. I agree, I am there for emotional support and advice just like a girlfriend would do. I've given her suggestions on what to wear on their anniversary night, his birthday and more. She wears his ring next to mine and I think it's terrific. The best thing that is going to be happening for us is coming up later this year. We have booked a night with one of the wedding chapels on the Las Vegas strip, they not only do legal marriages but fake ones as well, then provide a fake marriage certificate to the couple. They are very well informed about the cuckold lifestyle and cater to cuckold couples. So my pretty wife is going to have a second husband - we don't care that the certificate is fake, to us it's very real and binding. He will be moving in with us later on in the fall and putting his house up for sale.
I am already getting our downstairs guest room ready for me to move in to it, and I'm happy to do it. I think he's an amazing man, he treats her like the queen she is and as she's told me many times he's the man of her dreams and is so very much in love with him. Every times she's told me that I feel so warm and happy for her - compersion is the word. And speaking of being the "female" friend to her, she even has me wearing panties and her dresses from time to time when we're alone and talking "girl talk" because she says that it just feels right. 16 years ago I wouldn't have believed it if someone told me that I would be allowing my lovely wife to have a lover, never mind marrying him with me giving her away to him and then him moving in, and most certainly wouldn't have believed that I would become a kind of cross dresser and have girl talk with my now "taken" wife.
There are some who don't believe what I tell them about us but I don't care really, I know it's all true and I'm so happy that it is. I'm living the cuckold lifestyle that I'm sure thousands of other cuckolds wish they were living. This all started from my wife cheating on me, something I can tell about at another time.
My best friend and his wife know that I'm a cuckold, but that's also a story for another time lol