Been there. My first week at uni. It's late at night after the busses stop for the night. Walk homeward after a party with a cute girl from my initial study group. Live twice as far away as her. She tells me I can crash at her place and I accept as long as she isn't bothered. She has an 80cm wide bed in a tiny room. I lay on the side with my back to her to give her as much space as possible and fall asleep instantly. Awkwardly thank her the morning after, get a weird hug, and leave to catch a bus home. Only realize years later when talking to a girl friend about me being awful at picking up obvious signs.