408.

Encourage her to have sex outside of your marriage

As far as you know, she has never cheated on you, and has certainly never dated someone else since you got married. And even she is not sure how much of a "date" this will be -- but it will involve the two of them spending two nights together at a hotel. She is now trying to decide how to tell you about it -- whether to describe it as "no big deal" and whether to tell you not to worry because "nothing will happen." But deep down, she knows that isn't true. She knows he will be expecting her to sleep with him, and she knows that if he does, that she will be happy to do it.

"Thanks for walking me to his place, honey. I love you, and I'll text you in the morning. "