I'm pretty sure that's karma, Madoromi. Still, as big as Ai's insecurities are, I feel like Madoromi really isn't a threat to Ai and Misumi's relationship, no matter how hard she tries to be one. Also seeing random fujoshi reacting to Ai and Misumi flirting never gets old.
Also I'm kinda relieved at the last few pages; when I skimmed over the raws I thought Ai was getting in trouble for kissing her underage girlfriend in public like that, but no, she's just getting nervous about talking about her love life with her highschool friends - which, to be fair, could still lead to drama (but probably won't).