I'm gonna be honest. This sounds like bullshit. You've been here a long time, posted a lot of photos of her, but you've never set up your profile as a couples profile, and you've never verified.
If you are telling the truth, either you need to stop this before it starts, or leave now. All this ******* about her leaving you? If she was doing this because you both like the idea, and she loves you, she would NOT be saying this. if that is real, she is already thinking about leaving you. Either don't proceed with this, or leave her now.