I actually wrote something around this time last year about this same topic! It’s right here c: my feelings on their relationship have stayed the same ever since I started liking that pairing, & I totally agree that their relationship is very interesting. They just compliment eachother so well & I firmly believe it’s not as one-sided as a majority of the fandom believes it is.
One thing I actually forgot to mention in that post is more things I noticed about S1E5. In terms of strength, Grell is definitely on-par if not stronger than Sebastian. The demon was definitely struggling in that battle against the reaper, & you could see it in his eyes. But if Grell is so much stronger, why didn’t she just end Sebastian right there?
the answer should be obvious xD my nyas