Now you have to undo the monster you've created.
I would guess since you were able to condition her to be jealous than you SHOULD be able to reverse that conditioning. But it's gonna take a LOOONG time- longer than it took you to make her feel this way b/c now she's gonna be conflicted over what her true natural feelings are.
Always reassure her of your love and that no woman would stand a chance when placed beside her. Let her meet your girl friends and see that she has nothing to fear.
And let this be a lesson that manipulation of others can and will come back to bite you in the end.