March 31, 2006 6:19 AM BST
I favor the "prepare her a bit first" approach. My experience has been that someone who understands GLBT issues intellectually is better prepared to understand them personally. Movies with a TG theme, especially ones with a very human presentation, can be particularly effective with some SO's. TO WONG FU.... is a good example of a safe TG comedy. BIRDCAGE. TRANSAMERICA is a bit more the "just before you tell her" movie, unless she suggests it. I also believe in having clear, simple written material available because coming out is an emotional time and we may not be at our best telling the other person verbally. In addition, some people just do better reading information quietly when they are calmer.
I do NOT recommend the "leaving a piece of girl clothing lying around" approach. It tends to elicit a "The Son of a Bitch is cheating on me" reaction that will leave you explaining to an angry partner about "Her". No, better to tell her when she is calm, happy and you have shown your loving side prior to it. A good session of passionate and warmly-loving sex won't hurt, as it will quell fears of your being gay and her losing her partner. She is going to have fears, anger at deception, uncertainty...her reality is going to have been tipped on it's side. Understand that and just let her express her fears. Don't try to "fix" them. Time and understanding will do that. Your understanding and and letting her vent her feelings are what she will need.