Even though we had a pretty rocky start, with sickness and moodiness, I'm so happy and proud with the way Ben has adjusted to Sam's presence. Even in the very beginning he never took his negative feelings out on Sam. Ben has loved him right from the start.
At first he liked helping us wash out the bottles, but that ended pretty quickly. However, he hugs and kisses Sam all the time, tells him, "It'll be okay, Sam," when he's crying and introduces Sam to his various toys. Naturally there are still times when he feels jealous and tells us to put Sam down and play with him. I've tried to explain to Ben that after he wakes up from his nap and Sam's still sleeping, that's the time I can give him my full attention. He hasn't quite grasped that concept yet, though, and always asks to watch TV during that time. Then later he gets mad when I can't play trains because I have to feed Sam. We're working on it.
The cutest thing happened a few weekends ago, when we took them both to the YMCA nursery for the first time. Apparently the entire time they were in there Ben was protecting Sam and telling the other kids not to touch him. He's looking out for his little brother.