Is it normal that i like women to watch me beat off?

I love this site because it enables people to get some really weird shit off the chest. Anyway here's mine: I really like to have my girlfriend watch me beat my meat as a hot way for sexual foreplay. I mean, I just got into this. We saw it on an internet porn site, and we decided to try it(as well as a few other things too disgusting to try again) as a way to liven up a pretty lived up sex life. My girl is the most way out woman I've ever had a sexual relationship with, so she's ok with this. Doesn't seem to do much for her, other than making me a regular fuck machine. So, is this normal? Beating off while being watched? But I can't bring myself off. She does that for me.