Yeah, you're sickened that you wanted to screw this really hot guy and then actually did. That's sickening. Who wouldn't be sickened when they found out that they were a normal sexual being and not a TV show character.
And good for Prudie for pointing out that it would be "good" if you could tell your boyfriend (when you drop the bomb) that you were sooooo sickened that you're already in therapy. Fucking great idea. Better yet, maybe you could like cut yourself a little so you could show him the scabs and scars so he'll know how truly sickened you were. I think plucking your eyes out would be going a little too far but give it some thought.
Now here's the question: If you go for Prudie's "therapy" dodge, how long do you have to actually put up with that bullshit before your guilt ticket's officially punched and you can get back to a normal life?