I'm 29yo. Discovered cuckold porn, then interracial cuckold porn when I was 15 and have been watching it ever since. I have a girlfriend who I've been with since I was 17. It's actually fairly difficult to balance this fetish with a relationship, because if I watch too much porn and get too deep into this stuff it becomes difficult to enjoy normal vanilla sex.
I told my gf I'm into this stuff back in 2020 and for quite a while we'd have sex themed around this stuff or talk and text about black men we encountered on the street or about interracial porn. In the end I lied and told her I'm not really into this stuff anymore because I wanted to sanitize our relationship. Never did actual cuckolding, but I've considered it many times.