It just made me realize that he already has a good of habit of sharing. He doesn't get upset when something is taken away. He's a good little boy.
It was validation that I have taught him well. We've taught him along the way to share with his sister, which is where I think he's learned most of it. He'll be playing with her toys and I'll ask if sister can play with one, and he'll bring the one he is playing with to her. Like he's saying, "I like this one so she will too." He's a very sweet kid. He's always helpful, like when Abby gets fussy because she's hungry... he'll put a paci in her mouth buying us a few seconds without screaming. He's gentle with her, not pushy.
He is just an awesome kid... not saying he's perfect. He does have somethings he refuses to give up and there are times when he throws fits. But for the most part... He's a good kid.