"It isn't like she's one night stand-ing him. He knows where she lives, he knows where she works, and he knows she'll be back." - Derek and Casey navigate a relationship and walk a line between casual and not so casual. Dasey.

After three years Derek and Casey still can't seem to get along. In a last-ditch attempt to create one big happy family, or at least get some peace and quiet in the house, Nora suggests they try something new. Dasey!

Casey's annoyed when she runs into Derek at a party, and Derek is much more annoyed when Casey completely denies having romantic feelings for him.

It's the summer before Derek and Casey leave for university and things seem different, but not different enough. Dasey

If they were going to get caught Derek really wishes they could have went out with a bang, because being caught holding hands is so much less cool. Fluffy-ish one-shot.

She knew it was bad. But it happened all the same. Dasey.

Where Derek thinks Casey is wrong, stepbrother isn't the same as brother, and things, luckily, don't work out how Derek thought they would. -oneshot