No, across the board: let's just say I'm not partial to 'trap'.
ok lets just say she's your step sister, and your respective parents have gone away for the weekend. let say she has gone out with her friends and come back drunk, and been very flirtatious with you on the sofa, and maintained deep eye contact.
ok lets just say she's your step sister, and your respective parents have gone away for the weekend. let say she has gone out with her friends and come back drunk, and been very flirtatious with you on the sofa, and maintained deep eye contact.
wasted opportunity not to smash?
If she* were my step-sister by a technicality (i.e. through marital co-incidence), and we otherwise led separate, independent lives, then I'd see no harm in it. Conversely, if we'd spent our formative years together in a familial circumstance such that her father was practically my father – making her for all intents and purposes my sister – that would be to risk an irreplaceable platonic bond in pursuit of something romantic and thus, inherently less stable; not to be undertaken lightly, if at all.
*Positing a hypothetical scenario where the person depicted in the OP does not seem to possess the lower-body of a male gymnast.