Negan was killing people at Alexandria.. And Rick wasn't doing anything about it. It pissed you of so much, you decided to deal with it yourself.

So you made an agreement with Negan, no more killing if you handed yourself to him.

"So do we have a deal?" He asked with a stupid grin on his face.

"And you promise that-" you tried to finish, but that clearly wasn't happening.

"Yes! Yes yes yes, your friends and home will be under my protection.. But only if you are completely and utterly mine" he replied, grinning as he place Lucille on his shoulder