Reading Renka's internal thoughts and emotional turmoil was so hot and cute, this entire chapter minus the very last shinji panel(e_e) gave me the warm fuzzies.
I can't tell if Shinji used a spell this chapter, maybe the suggestion spell from last chapter is still taking effect (guiding her to say how she really feels).
It's only been about 3 months or so in the story and the professional works fast. Keep giving the third wheel some more love.