alone exxcept last night.. she asked me to sleep in her room, I did but it was simply hand holding nothing more. She asked me to stay when I got up to leave.
Then yes, sleep in your own bed. If she tries to join you, politely say "If you don't mind, I'd prefer to sleep alone tonite. I don't want to send you the wrong message. Okay?" Not mean, not nasty, but neither apologetic. Just IS.