['I went to my high school reunion the other day and got myself into some trouble', 'Uh oh. A little too much to drink?', 'Yea, and I cheated on my wife with my high school girlfriend.  I dont know if I should tell her.  I feel bad about it']
That is about as bad as it can get right there. I think you might have to tell her. The guilt will eat you alive.
I cheated on my wife with my high school girlfriend when I went to my High school reunion.  I dont know if I should tell her