[She hums quietly, continuing to stroke her fingers through his hair as she shifts as close as she can to him. Don't mind the boob as she tries to bring his head in to rest against her shoulder.]

You can talk about stuff you guys did together, or think about things he would say if he knew you missed him. We could even go to one of the observatories and look at the stars. That's his thing, right?

["Luminary of the Stars"... or whatever he said.]

Oh... or I've played Chopin's Tristesse for you before, I know. [She hums the first few bars to try to jog his memory.] It's a sad song, but it sounds hopeful to me. Like... we'll get to see everybody again, before we know it.