Merle
So his brother is shacking with the little blonde bombshell.
Honestly, he's surprised.
Of all the people he could have ever imagined Daryl ending up with (and despite all evidence to the contrary, he has a fairly vivid imagination) Beth Green was the last person on earth he saw with his little brother.
It's been about a week now since he walked out of those trees. Rick found them a decent sized farmhouse with enough rooms for them all, and they're planning on staying there until the blonde gives birth to the spawn.
He's gonna be an uncle.
That thought scares him more than any walker ever could.
Rick's got the men building a fence. He's got know idea how long they are actually staying, but he wants it to be safer than the prison. Merle isn't stupid. He sees how they watch the girl and her slowly growing stomach. Maggie is the only one with slight disgust in their eyes, but they all posses fear. He hasn't asked what happened to the sheriffs wife, and frankly, he's not sure he wants to know.
He's got enough to worry about.
After all, there's a baby on the way. Not just any baby. A Dixon baby.
That means that Beth is a Dixon. That means that she is his brother's woman and that means that now she is, however unofficial, a Dixon.
That means that she is his, as much as she is Daryl's. His to look after, and his to protect.
He intends to do a good job. The best job.
