Is it normal to want to make love to girl while she's sleeping ?

As long as she's agreed to it, no problem. Someone I went out used to wake up in the middle of the night with an urge, then she mucked about with me while I slept and then, when it prompted a... umm... phsyiological reaction, she'd wake me up, point at it and say, "Oh, look at that. You've woken up all hot and bothered. I *suppose* I can help you out with that" like she was doing me a big favour rather than that she'd woken me in the middle of the night because she was a horndog.

I never complained, though, and when she admitted what she'd been doing, I just laughed.

A lot of people want to do this. It's normal. I would like to be fucked while I sleep as well.

not rape if you dont awake up

no drinking at your place

Get a spinning wheel and cross your fingers.