You do realize that this represents a momentous moment in your marriage -- and it also represents a dream come true for you. After trying to convince your wife to start cuckolding you, everything is finally set so that she's going to, and the truth is that you are also deeply hopeful that she WILL start going out on dates with other men too.
In some ways, it's quite convenient for your wife's boyfriend to be living so close. It means that she can drop by his place easily whenever they're in the mood for sex -- or he can drop by your house, whichever is easiest at the moment. And you and he have become pretty good friends, now that you see quite a lot of each other. But it also means that everyone in the neighborhood knows about their relationship -- and know that when there are neighborhood events of any kind, she is very likely to attend as part of a "couple" with him instead of with you.
He noticed your wife’s smile, and her head turning back. Next day he found an excuse to talk with her about her dogs. And in less than a week he was stretching her pussy every day. You wouldn’t be able to do what he did, would you?