Thanks for your answer.
I dowloaded Eternum for the sex scenes and stayed because of the story and the humour. For me it feels natural, that there are more intimate scenes as the relationships grow. But still the story is top-notch and would lose little to nothing without the sex scenes. There is quite some spice in the 0.8 update, but also good story progress and it also hit my sense of humour perfectly. Don't know if the story progress is sufficient for your taste, obviously.