Is she ready?

When you say that you are afraid of bringing your friend over because she might like him too much - it sounds like your relationship isnt strong enough to handle a cuckold experience.

You should strengthen the relationship as much as possible. Spend time together. Have deep conversations and open up all areas of your lives together - goals, dreams, desires. If you get to the point where you believe without a doubt that your relationship is strong, start asking her to explain her comments about finding black men attractive. Maybe buy one of the 8" realistic black dildos by Doc Johnmister and fuck her with it as often as possible. Give it a name like "John". Ask her if she wants John to fuck her whenever you initiate sex. After a few months tell her about your fantasy of watching her with another man. Roleplay with the dildo while talking about your fantasy. Hopefully, over time, your fantasy will become her fantasy. She will start asking you if John can fuck her. Soon you can start having discussions about making the fantasy real.

Dont rush it. It will take time. I am on a similar path wit)h my wife. Good luck. I hope your friend ends up regularly fucking your wife and giving her the satisfaction that you cant.

It looks like I have convinced my wife to play some chastity games. We might do some dice games to determine how many days I get locked up for. But, that doesnt mean she has to go without. I need to still get her done even though Im locked up. She has a bunch of vibrators and other toys, but Im going to buy one those big silicone cocks and lots of lube and go to town on her.