I realized today that I'm basically writing the same story over and over again with the same two paper-thinly-veiled main characters, that have existed for probably more than ten years now. I don't know why this specific story template keeps pulling me in repeatedly. Gah!
Any suggestions?

Edit:
Basically, not all of my stories are like this, but too many of them noticeably are:
The main character is always female, vulnerable yet determined, small, child-like, gentle, all-loving, but with serious self-esteem issues and a general lack of self-worth; often angelic or winged in some way, typically with amazing hidden cosmic power; often compared to as a cat or kitten
Her love interest is variably male, female, both, or neither; often a mysterious and powerful wizard or magic-user, or divine being of some sort; quiet and usually amiable; often winged in some way; usually has white hair and 'elf-like', androgynous features; is either protected by the main character, or [rarely] protects her.
Plot wise, they are either star-crossed lovers and/or have to overcome many difficult trials to either be together or assist each other in ascension. There are usually many plot twists through out.
I have the same sort of problem in my writing - my main characters and plots also tend to be similar from story to story, it's just the details that are really any different.