Lou hits it right on the head here. I was in a similar situation about 18 yrs. ago with my high school/college sweetheart. Things seems so awful at the time but eventually time did heal all of those wounds. Believe it or not there will come a day when you can think about her and remember only how great the good times were and not really even care about the break-up.

Hang in there buddy, you'll make it through all of this.