My to-be boyfriend (long story) once asked if I'd ever do it infront of him, and I was like, "hell no" but that was because I never masturbated. Well, since then I've started to, so I know what I like, so when we're together I can let him know where to go and such...and actually, now that I've started using a vibrator, the idea of exploring myself and having him see my reactions...it gets me kinda hot. I think he'd like it too
I think I'll probably try it, but I don't want him to be sitting on a chair across the room or anything, or me to feel totally exposed. But I think that having him lie beside me on the bed, with maybe a sheet or something light over us, that would make it a little more intimate and I wouldn't be so weirded out by the idea.