The dock master caught us having on her parents boat, will he tell them what we did?

My girlfriend and i were having on her parents boat. It was parked in a slip at their yaught club on a relitively busy day. At one point i looked up and noticed the dock master doing something on the boat neighboring us. I figured he had'nt seen us through the windows (we were inside he was outside) and would go away in a few seconds. moments later he reappeared and it seems like he paused for bit to watch, then went on doing his own thing. I didnt mention any of this to her cuz it would have totally ruined the mood. We are often at the boat so being at the boat wasnt an issue. Do you think the dock master is going to tell her parents what we were doing? do you think he saw through the badly tinted windows? would it be embarrasing for him to tell her parents that he caught us? she hasnt come out to them and im hoping that he doesnt say anything to them about what we were doing on they're boat. in case it matters we are both over 18 so its not like its important to tell on us.