I mean...I guess that could happen

In truth, dreams rarely reflect our internal desires 100%, it's much more likely to experience a dream that goes against our conscious morals at some point in our lives.

If I had to guess (apart from giving the artist an excuse to draw out a very taboo sex scene), his dream reflects both his inner desire, and hatred all in one.

It's purposely uncomfortable because he feels disgusted with himself at the thought of holding a sexual desire for his stalker, so like this, he can enjoy the sex in the dream while also having it give him reason for discomfort by having his dad as a character in it too. It also speaks to his insecurities of losing everything he has because of his dad suddenly showing up in his life again.

If he loses everything, the only thing left is his stalker, the one he is starting to feel some level of perverted attraction towards. So his dream takes that from him too, while simultaneously providing him an outlet for his sexual frustration for the stalker in question.

Very interesting, weird yes, grossly uncomfortable too. I think anyone who finds this scene alluring should take the time to know it doesn't speak of their personal morals or values! There are many reasons a person might like these types of scenes, especially in a fictional medium, and exploring why that might be the case can be healthy, and even ease a person's mind.

Anyway, I don't think he did anything to harm his dad (yet), but maybe soon! Maybe the two of them will run away after committing the crime to live happily in their severely unhealthy relationship!