Was it wrong to urinate on ,y g/f whle she was sleeping?

It has always been a fantasy of mine, but i no chic ever went for it, including my current g/f of 3 weeks. I was sleeping over her house the other night, and instead of going to the b/r in the middle of the night i did on her face and chest. She was furious. I stood there turned on and laughing hysterically at her reaction. She says she has to think about things now.