Storyteller Slut

I don't know if this happens to other writers, but I have this problem -- I'm a storyteller slut. I can't seem to stay loyal to one story, to one set of characters. Oh, I love them all, but I tend to stray.

My first story was of a man named Jack and his long lost love, Elizabeth. I lived with these people and their story (which I had in my head from beginning to happy ending) for a long time before deciding to write it down. But when putting it to paper, the brother, Michael, wouldn't quit flirting with me. Yep, I dumped Jack for Michael and began writing his story.

Next, a Crimean War hero named Gerard kept giving me The Look. I tried to remain faithful to Michael and Jerilyn. I really did. But The Look pulled me too strongly, and I entered into an affair with my Victorian story. I'm working on that now. And, like the other two, the entire story -- save some details -- is in my head and just needs to be put to paper. I love this story. Love the characters.

And yet...

The first week of KIA, I cheated and wrote a short story for a contest with a Nov. 1st deadline. Yes, I felt guilty. But I'm back where I should be, trying to be faithful again.

Now, I have a series of time travel stories in my head that would be awesome to write. I AM trying to ignore the temptation, and so far I've been successful and haven't been seduced away. I MUST remain loyal to my Victorian until I've typed "The End."

Any advise? Does this ever happen to you?