could this be considered bdsm or just fun in general?

The other day my wife and i texting back and forth and she said that I probably do stroke myself when she is not around. I text back saying that I don't unless she is with me. Her response was better not in a joking way lol. So me being me I asked what she would say or do if I did and her reply was watch. Well later that night both of us was in the mood and several times she told me to stroke myself or she took and placed my hand on myself. It was actually fun her saying and doing that. I think she actually had fun with it as well. My question is could that be minor bdsm or just having fun in the bedroom? less