How Can I Have Sex With My Sleeping Girlfriend Without Waking Her?

Also just to let you know that this has been done before and the men have been charged with rape.
If she is asleep she has not given you consent.

You can't unless she's in a coma. But I would love a wake up call like that lol

Give her the chance to know whats on your mind, maybe she would pretend to be asleep, because she will wake up any way, and then she might feel that your trying to be disrespectful. She should be able to sleep with out being on guard from her on boyfriend...good luck

Give her tylenol without her knowing