I say tell him...
 

but be prepared for him to flip out. When he does you need to rationally explain that although you still care about him you are not going to break your plans, and that you two are no longer together so you have every right to move on if it's what you want to do (can help him out by telling him you and your date are only friends, if it's true). You can also add that you are not ruling out that you two may get back together, but in the mean time you are going to make the most out of college and life.

I'm not sure where you two are at in your relationship or who broke up with who... so adjust to fit the situation of course ;)

Whatever you do please do not break your date it will not only make you feel bad, but it will hurt the guy's feelings and leave him scrambling for another date as well.

I tried to PM you, but your mailbox is full....

I know it is difficult, but I am proud of you for standing up for yourself. Go to the formal and have the time of your life :cool:

GLGIRL! Just got all of these new threads and no place to go!

Transfer to KC and be my Lady to aaalllll of the Fraternity Functions! I am A God. Only thing about being # 1!

Studied Law, Heck , being a COP was Better, you did the Law!:D

You Da Best ! Ur Bud!:)

Go to the formal, have fun, and forget about the ex. He seems to be a pain in the ;)

HAVE A GREAT TIME!!! :)

Tom, you have written so many sweet posts! If they can't help heal a heart, don't know what can.

CHANGE OF TONE!!!!
Honey- He is SOOOOOO playing you.
He does NOT own you-
Your world does NOT begin and end with him-
You are NOT a trained pet who comes when he decides to whistle-
(Like maybe this FALL!!!!) Give me a BREAK!

You posted that you have a date with an "Awesome, awesome guy" If this is so....APPRECIATE HIM for the qualities yur "EX" is obviously LACKING!!!

Now, if he is ticked off because you cheated on him or something-
LEARN THE LESSON and DON'T EVER KNOWINGLY HURT SOMEONE YOU LOVE!

Back to normal-HOW DID IT GO? Did you have a great time???

I'm so glad that you had a great time. So maybe there will be a new guy for you to type about! :D

FUTURE PLANS!!! YEAH! I hope all goes the way you want! So happy you had a wonderful time!