Lilooo's feed

Lilooo created a topic of 1 to 10

Can someone explain to me what this story is all about? I repeat what I said before, that nonchalat ML gives me a bad feeling and at this point I am detesting him. I understand MC, they haven't been dating long enough for him to ask ML for an explanation, plus his suspicions are just based on insecurity and rumors, I feel bad for him.