after playing the twelve days of christmas i now see the devs view of the girls. they are all meant to be cheap whores who will fuck anyone and anything. esp Clara. seems like the mc needs to find himself a new girl in Misfits since he probably won't end up with either Clara or the girl he really wants, Amy.
That is actually not quite correct when it comes to Clara. Unlike Amy, the Clara of "12 Days" is a tease, has exhibitionist tendencies (it is obvious that Misfits "black party dress" and "daring dress" path is something of Dev canon), but also a fixed limit how far she goes. As Clara said in "12 Days": "...just a handjob. That is not cheating."
That is her limit, Clara does not go further in "12 Days" and does also not participate in the "Hen party" stripper thing. It is fully possible that Max is her boyfriend and they have rules how far Clara can go and what Max enjoys. Because Clara specifically says that the handjob is not cheating and she does not do anything more sexual in 12 Days.
As for who Max in Misfits really wants, that depends on what path you are on. If you are on a Clara path it becomes clear by how Max thinks about Clara and Amy, that his infatuation with Amy is waning and he starts to like Clara more and more, the longer the game goes on.
In addition, there are loyal paths for Clara in "Misfits", the only one of the main girls.