[It's not that Jason doesn't pay attention, Dick was just way more subtle than what he had anticipated about his feelings. He always thought he was like an open book.

And shouting the wrong name during sex is just another proof of how Dick is practically unable to hide anything...]

Now that would raise suspicions. If I was a good boy, a good student, I would leave right now so you wouldn't have to explain why did a teen bring you home and didn't leave until next morning.

[He comes back, flashing his best grin] Sadly, I am not a good boy.