The manga is a light romcom, I know. I also understand the two "friends" are suspicious of both MC & FMC, that they are not really a couple, so they basically manipulate them to see if they break, one for fun (sarugaya) and the other dunno yet (toiro's friend). But damn the execution is just horrid, I was just annoyed throughout it rather than enjoying the couple being teased. Fuck you girl, just mind your business. It doesn't matter if both aren't a couple, if your friend didn't tell you anything about the situation, you are not involved so butt out bitch. Being sussed so much and on your face, I would have been annoyed and make it clear to the girl before leaving to eat alone so I don't have to deal with my fake girlfriend's friend's nasty attitude.