This will be a revealing event on how LP will handle Sophia. He has already said Sohia will not initiate anything and that it's up to Dylan to advance the relationship. Paraphrasing.
So for Dylan to have the same advancement as Sam, Sophia has to want Dylan personally, not educationally. This doesn't have to be outright sexual desire but Sophia at least has to admit and act in a way that suggests she wants whatever action is taking place. Again it cannot be educational.
The bathtub boob play, it was aluded to that she enjoyed it but then after she did not weirdly enough and had to question it. She could have just thought I really enjoyed his touching my boobs. But no.
So I am hoping Sophia has dressed as such because she wants Dylan to try something and will help create the situation where it can.
But realistically Dylan will whine and beg, Sophia will do educational, and someone will interupt.
We need another teaser to talk about...