I'm sure virtually all of our white wives and girlfriends are at least curious and perhaps even quite tempted to go black. My shy, inexperienced girlfriend discovered a garage and hip hop clubbing website during lock-down here in the UK. She made several friends there via the chat room, including 4 black men she still exchanges messages with online. I was quite shocked by this, but she was pleasantly surprised that I was more than okay about it and we now refer to them as her black "boyfriends". She's 45 and two of the guys are early 30s, half my age, which arouses me still further and has definitely boosted her ego.
She hasn't met any of them yet and she insists she'd never do anything with them, but me being her "white hubby" and approving of her having these 4 black "boyfriends" has been a turn-on for both of us.
Peter C