i have this au in my mind where marlene and sirius break up and marls is desperate to get rid of the feeling of sirius on her body.
she needs to physically move on, so she starts dating. and while she doesn’t sleep with every guy she goes out with, that’s her main intention.
so she hooks up with the guy who’s a bad kisser and she knows it’s gonna be bad in the sack and he is, but it’s fine because at least is not sirius.
then she goes out with the guy who only fucks her and doesn’t care for her at all and again, it’s fine, because is not sirius.
then she manages to find a more stable partner over time that’s sort of good but not really and it’s fine anyway, because is not sirius.
but then, she goes with a guy with whom she finally opens up about. they talk for hours before jumping in bed and it’s going well enough, until she realizes it feels too familiar, too comfortable, too achingly tender and she can’t quite shake the feeling off. so when it ends, she can’t get away from the guy and the situation fast enough.
and suddenly she feels grief for the first time because either she’ll never feel anything good again in her life or else she will be forever haunted by the memory of sirius mark on her when she finally does.