Captured by Lotor, Allura realizes she has feelings for him. Feelings that scare her to the point of running away when she realizes how close she was to giving him everything.
To avoid that happening again, she proposes to Keith who accepts. However Lotor is not about to let this insult stand, and kidnaps her on the day of her wedding.
But this time his plan is different. He doesn’t intend to seduce her into marriage. No, this time he plans to get over her, one way or the other, even if that way involves lots of sex. Sex Allura is only too willing to engage in!
Fic started in 2009.
Doomed Romance: A Lotor and Allura fansite 
I’ve read it all. THAT IS AMAZING! More!
Loved it! One of my favorites so far.