i have never used or even mentioned the use of safe words with my owner, but as others have allready stated we have a long established relationship, though knowing my Master so well, i am sure he would never push anyone to far

i once had a dom that said the very same thing you are talking about sisterhoney, if i had used the safe word he had given me it was tantamont to me breaking all future contact with him,,, which eventually i did

its a classic sign of dominant insecurity in my opinion to manipulate a safe word in such a way, some of us press on and deal with it, some of us avoid those types of doms, and others even see it as a kinda ironic carrot with repercussions to dangle in front of the sub

based soely of the information provided however, i would reccomend that he seek to communicate to his dominant the need for a more stable relationship and that for him to really build up a sence of trust with her he needs for the time being a safe word that doesnt hold a sword of deamocles with reprisal over his head