So, what you need to learn about Derek and Stiles in 3B is:
- Derek knows and can easily track Stiles’ scent.
- Derek is the king in Stiles’ chess board.
- Derek really doesn’t want to have to kill Stiles.
- Derek is not backing up from trying to help Stiles.
- Derek knows Stiles’ age.
- Derek was two…
Derek posts the ad because he’s desperate.
It’s a primal sort of desperation; he feels like a cornered rat with a shoe coming down on his head. Every time someone calls he gets to hear “I’m just worried”. From his parents, his Nana, his aunts and uncles, his friends, his coworkers - but “I’m just worried” isn’t what drives him to Craigslist.
It’s his sisters.
Laura and Cora go above and beyond “I’m just worried”. Derek has been duped into four blind dates in the past six months. One ended with Derek breaking up a fight between his date and a bartender, then letting her throw up into a salad bowl in his apartment because he couldn’t remember where she lived and she wouldn’t tell him. She spent a good chunk of the night crying about a cat she had when she was nine, and how it got hit by a snowmobile her older brother was driving.
It was a fun time for everyone.