I'd like to ammend a little...you can't do much of anything except (potentially) look better than the OM/OW.
The OM/OW isn't perfect, they'll react the same way with pressure and guilt and all that crap if things don't go their way too. : )
You scream and acts all possesive and stalker like? While the OM/OW doesn't. OR the OM/OW acts all possesive and stalker like? While you don't.
Who is going to look better?
Don't get me wrong, I'm not saying make them dinner, and turn down the sheets for them, just don't act like the crazy boyfriend/girlfriend from highschool or the movies.
Experience is a brutal teacher, but you learn. My God, do you learn. - C.S. Lewis
Life is usually all about how you handle Plan B. - Jack3Beans
Listen without defending; Speak without offending - FaithinAK