He looks up at her staring at the picture of Oliver, a very complex expression on her face, and they're kissing? He snorts with wince on his face because yuk.
But yes, he grins like an idiot when his attention returns to the photo and turns it around to look at it again. It's made his day to see himself and Orion again, she probably has no idea how good it makes him feel just to have some kind of image of who he really is.
"Aw, well. I guess." He says when she makes that remark. He looks a bit sheepish, but still clearly excited. There's more than just this, right?
"If we were to be separated, at least one of us would still have fur." He meant that the lion and boy were collectively 'him'.