Payphone pick up ( not my original rp! )

Muse A calls up their usual dealer, only to discover that they’ve been replaced by someone new, Muse B. Muse A is wary, but in need of a fix, so they agree to meet Muse B at the spot of their choosing - by an out-of-service payphone in a run-down part of the city that cops rarely bother to patrol. Unsure what Muse B looks like when they arrive at the pick-up place, Muse A keeps their eyes peeled for anyone who seems to fit the dealer look. They’re caught by surprise when Muse B shows up to do business. Unlike Muse A’s former dealer, Muse B is absolutely gorgeous and a little bit–charming? Despite an initial physical attraction between the pair of them, Muse B insists on keeping things strictly professional. Muse A agrees, but can’t help contacting Muse B more frequently, eventually interested in Muse B more than the drugs they’re selling (or equally interested in both).
Will Muse B cross that ‘professional’ line with Muse A? Will Muse A have to find another dealer to escape from the addictive pull of this one?