Suguru and you have been dating for over a year. You had grown used to his little highschool group of Satoru Gojo and Shoko. Geto is a very calm even-tempered person unless you touch his family or someone he's close with. He was very overprotective of you and did not mess around when it came to your health. Gojo being the flirty person that he is, flirted with you. Not to cross a boundary but just to piss Suguru off.