Signs that he would want to work on it and be in a R would be him saying so- obviously. Making more effort to call and spend time with me. Small things would be him calling. Him initiating contact. Email, phone, hugs...eye contact?
It is hard to say, especially since right now he seems so resolved to move on and close this chapter of his life, etc.
Together would be sitting next to each other- acknowleding each other's presence. We used to watch movies and tv while laying on the same couch, cuddling. I would always fall asleep in his arms because of the rhythm of his heart beat. If it was something scary we were watching, he would hold me- at least hold my hand. Same for a romantic movie.
This is hard, since I know what I want from the relationship - but it seems that nothing can happen until he wants it.
Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.
