Hi Slingerbult !
I've downloaded your package and tried it. I put 4 stars on it because it is well designed and technically mastered, nothing else to say. But the dialogue itself, I still can't go further than chapter 1. I try to be gentle but there is just not enough feedback on screen. I can pull her up and she says that she's happy like this but the game never progresses as it is impossible to make the guy cum with just tongue licking (I did not want to spoil myself by reverse reading the dialogue file, but I imagine that I need to reach a cum line to make the story go on). And if I try handjob, she's so happy that she goes bak to mouth on herself but if I try to suck she's angry and go back to hands and at some point she just throws me away and I still don't know what I'm supposed to do with her.
So that's why you don't have your 5th star. I've retried the chapter 1 at least 3 times over the past weeks but each time I face the same problem. So I'd say that maybe you could make it a little bit easier or explain a little bit better how you expect the player to play since you seem to don't leave any choice but to be nice with her, which does not make anything progress (or at least it's invisible).
I know that it's difficul to test a dialogue alone because YOU already know how it is working and you're expecteing everything which happens while you're testing. So I hope that my external point of view will help you improve your dialogue since I find it really frustrating for now (chapter 1 at least).