Excuse me? You're planning on spending tonight with her? After you promised you'd visit my dungeon and let me try out my new strap-on on you.
Why? Who is she? She's certainly not your priority. That much is obvious from the way it's ME you're constantly pining for and spending on. So why are you all of a sudden choosing her over me?
She found your panties. She was bewildered and threw them out and now you're making it up to her. Give me a break! If I were her, I'd have made you wear them out to dinner, then fucked you in the ass until your panties are soaked!
This is the last straw. She clearly doesn't understand you and you'll never be able to fix your marriage. I don't mind her pottering around in the background of your life but I will not have her taking priority. It's time for you to leave her.