What does it mean when a guy rests his head on your shoulder?

Anonymous
Especially when you used to have a thing with each other a little while ago? My guy friend and I were at a party with our friends last night and we were both sitting on the couch. It was pretty late so we were both tired and out of nowhere he just slumps down and rests his head on my shoulder. He didn't fall asleep or anything or even say anything, just continued to play on his phone. Like he did this right after I sat down next to him. So I rested my head on top of his and we just sat like that for a little while while our friends talked.

Does this mean anything?
What does it mean when a guy rests his head on your shoulder?
2 Opinion