Anyone know the name of this fic?

I was thinking about it the other night when my boyfriend brought up going to a wine-testing, and it brought memories of this fic back. I may get some details wrong, but the jist is the same.

Rarity is in love with a stallion, who has fallen in love with another mare instead. To get revenge, Rarity invites the mare over for a wine-tasting and gets her drunk before inviting a different stallion (I think Thunderlane?) over to rape her. She then invites the boyfriend over so he can see his girlfriend 'cheating' on him. Afterwards, I believe she feels extremely guilty over this act.

No clue who the characters are, now that I think back on it the 'stallion' -may- have been Spike? I'm not sure. If anyone can remember the name of this fic, it would be greatly appreciated! :)