StSE, I've never seen that story before in my life. Never. The first chapter of "You Lost" has been up in one form or another for over a year now. I hope you can trust me when I say neither I nor my original co-writer read that fic you linked to.
In short, I’m not taking this fic down again.
In long, I’m not sure how we got such similar chapters but it sure weren’t from me reading your story. Your summary doesn’t interest me. There’s no sex in the first chapter. And It’s G1. I certainly never read G1. I will leave your review up, because I’m confident I haven’t done anything wrong.
And since I came clean last time I mucked up, I hope you can trust me, StSE, when I say I have no idea what's going on here. I don't have the original post date for my own, unaltered fic so I can't really accuse you of anything.