He keeps one hand petting the kittens who are starting to get comfy on his chest, but with the other he reaches up to cup the side of Nate's face.

"And who are more than worth every bit of work it takes to know. You've the best heart of anyone I know, Nate, and you give me so much confidence and strength along with the love. Being with you is the best thing to happen to me, in the whole of my life." Nate's already basically said he knows that, but Anders wants to reiterate the point.