Married male switch in my early 40's. My oldest "kink" has been eating my own cum and it's something I've enjoyed for around 20 years now. I also really love having it "fed" to me in different ways, whether just my wife asking me to go down on her and enjoying the "creampie" after I've cum inside her or in other more "kinky" ways with either a more femdom and/or bdsm twist to it.
I'm lucky enough to be married to an amazing woman who has supported and indulged most, if not all, of my various kinks and desires, starting with my desire to eat and be fed my own cum.
Within the past few years, I've found that I also really enjoy Chastity, Prostate Play, Tease & Denial, Pegging and Cumming in Chastity/Sissygasms.
I've also enjoyed the fantasy of being Cuckolded. While my wife's been happy to indulge the fantasy, she's not interested in making this a reality at this time. She is however is an amazing woman and has helped me to enjoy each and every one my kinky desires, (as well as lots of other fun ways to be together) making each of them a reality save for the cuckolding which she's indulged with various role-plays that we've both enjoyed.
I look forward to what the future may bring and different kinks and desires we can explore together.