You come home from work in the evening to find your next-door neighbor sitting outside his door. He looks dejected, so you walk over to him and dare to ask him what's wrong. He looks up at you and explains with embarrassment:

"I forgot my keys at my girlfriend's place and my phone's run out of battery. I'm stuck here..."

What you don't know is that he had an argument with her and can't get back to her place to get his keys, so he's stuck on the landing. Will you help him?