looking for a HP/LV pairing

[andromedao]

Lily is creature I forget what but she has two mates one light one dark she chooses James but he can't have children so she finds her dark mate who agrees and is lucius molfoy. Harry's mate are snape/light ans voldie/dark snape defects him without knowing it and harry goes to the dark lord that's all I remember about it if anyone knows I would be greatful thank you.

[Guest Hungry For a Story]

Ah, yes I know this story. I don't know if it is on here or not, I read it on Fanfiction.net. But here is the link to it: Cloudier Sky by MidnightEmber -

http://www.fanfiction.net/s/5772233/1/Cloudier-Sky.