Do you masterbate to your SO, and if so do you tell them?

Do you fap/Schlick to your bf/gf? If so, are you open about it? And if not, are you open about it? Also, how would you feel if your SO was masterbaiting to you? I'd personally love it and I do masterbate to my SO. Sorry for the typos; I hate typing on my iPod touch but it's all I have right now.

edit: fixed a typo