I don't Quinn has, that's one of the things that Tommy has against the mc, that he has been trying to fuck Quinn for ages and the mc comes along and fucks her within a few months.She doesn't seem like the type to fuck just about anyone, but she does run the local sex ring, so it kinda comes with the job. Then again, that threesome with Riona and MC in Ep 3 was a special occasion and not something she does regularly. It is a purposefully ambiguous situation.
I'm gonna say she might have had a couple of one night stands and/or special restaurant orders, but that's it. No fuck buddies, no boyfriends/girlfriends