I have to get ready so I only have a minute. But I think you should get dressed up and let him think whatever he wants! You're doing a good job of just playing it cool - answering his questions - but not giving too much info.
If you feel like you'll be too dressy for the mom's night - throw something extra in the car - like a sweater to wear over the sexy shirt you leave the house in. : ) lol...
Look good and let him wonder.
Me: 34 H: 34 DD: 3 M: 8 yrs H moved out Oct. 2008, "not happy" "don't know what I want" "will always love you, but not in love with you" PA Bomb: April 5, 2010