I've been sucking cock for many years, to the best of my knowledge she is unaware.
When I started to push her to be a hotwife she tried to turn the tables on me, I think I surprised her and agreed and went for it. BUT before hand I asked her how she'd feel seeing me with another guy. In reality her answer would and did determine my action.
After she became a HW she would occasionally ask me to suck her partners, of course I would comply. Not sure if it was for a sexual thrill or a controlling thrill, I really don't care which.
Now for a funny thing, many sex partners contact her for a repeat, one guy I sucked off for her called for a repeat but he wanted me not her.