To tell or not to tell

Regular RC readers will know about my obsession with Gray’s Anatomy. Those crazy kids at Seattle Grace keep me entertained every Sunday night along with a bucket of ice-cream and a bottle of white wine. Any-hoo. At the moment there’s a bit of a conundrum going on between cute, hobbit-like George and willowy model-type Izzy. The pair has been best friends for ages, and after a fight they decide to drink their weight in alcoholic beverages and wind up doing the deed. The problem is, George is married to the feisty Callie (how much do we love her?) The question is, does George spill the beans on his one night of drunken passion with Izzy? Or does he choose to keep the whole affair quiet? At the episode’s end George chooses the latter. He and Izzy vow to never speak of their shag again.
But you get the distinct feeling the whole thing is going to blow up in the season finale. This leads me to my blog thought for this week. Cheating. If it’s a one night thing – is it better to tell or not to tell? Will it hurt your partner more to hear the gory details or is it a case of what they don’t know won’t hurt them? It’s a tricky one. Some people are of the opinion that a long term affair is much worse a betrayal than a quick, whoopsie-I-stuck-it-in slip. If it’s not going to happen again, is it worth risking your long-term thing?
What do you guys think? Is George doing the right thing keeping his sexual misdemeanour a secret? Or should he come clean and hope Callie won’t drop kick him across the hospital?
When it’s a one night thing, is it worth spilling the beans?