Sasaki's possessiveness has started to irk me, but he has a point (re: Miyano crossdressing).
I feel like Miyano either needs to be ok with being "straight" and liking BL, or putting two and two together and realizing he is ultra bi. The author has done a good job of playing with that tension but I feel it will come to a head. (Unless they drag it on forever. I hope not.)