Hope you enjoyed your Easter day, Sue. I'm so glad you two spent a nice evening together. You are so fortunate to be able to have contact like that.
Keep doing what works, find more to build on what is working ... What would you think would happen if next time you slid over on the couch next to him and held onto his arm and just smiled at him? If you catch him smiling back, maybe lay your head on his shoulder to watch the movie.