Guilty pleasures

Spencer Winchester is the foster care sister of Dean and Sam Winchester. They aren't related by blood. Mary Winchester took her in as a baby, but after she was murdered, John couldn't give her up.
John Winchester is dead now, and Spencer is trying to keep Sam from turning dark side, while Dean keeps on with the secrets about hell.
Sam is turned into a vampire and the cure doesn't work on him, because he already fed from a human.
But Sam is a different, he can feed without killing people.
All vampires and lycans have soul mates and Spencer is Sam's and could be Dean's but only if he does something that could cost him a lot.
Sam is teaming up with the guys that turned him, and their lycan friends.
What happens when Spencer and Dean find out?
Will Spencer have had enough and walk out or will she stay with the only family she's ever known?
read to find out.
THIS HAS A LOT OF SEXUALITY AND CUSSING! IF YOU DON'T LIKE PLEASE DON'T READ.