My wife and I have been playing with the idea of her fucking someone else, during sex talk she always says she wants a big dick to stretch her out, I have got her an 8" black dildo which she likes to use from time to time but not a go to for her really. About a week ago she did say she wants a big black cock during sex but this was a one off and I think she knows it turns me on more than anything. She is currently using a dating app for a bit off fun and has tried a few swingers websites but never chats with any black guys. Anything more I could do to get her into it or should i just sit back and see where it goes?