Yeah he does enjoy rilling rosa up and getting her attention (even if negative) he commented as much after the umbrella episode. And he postures as unwilling much more than is actually unwilling. He gives rosa what she wants (nooo dont…) to get what he wants out of their interactions, even though he must be truly torn to some degree.
For example, in one of the most recent chapters, when he reaffirmed that her mother was his first and Rosa reacted with a psycho stare, he thought “now, because of me shes really mad” but he didn’t look terrified or regretful, he was blushing all over his body, trembling, staring and was still rock hard like???

Lowkey wish he was evil. This pity party is giving me whiplash