The Watched - Part II

In The Watched - Part I, we enjoyed watching two men with chemistry fuck against a window - for all of the city to see. This week, in The Watched - Part II, we learn that a curious voyeur saw the entire fuck session unfold. Unbeknown to the couple, the watcher takes in the scene - and jerks off in his jock strap. He shoots a load against the window in his apartment. But did anyone see him? Did the watcher become the watched?