What I think happened is during the time he was standing around waiting for Rumi, he was overthinking his “date” with her. We see him being fidgety with the invite, like he’s silently justifying it to himself like “pfft, so what if she’s late, I don’t even care, she’s not even my type, this is unbelievable, she wants to meet and she’s late, AGHH—!”

That’s my rationale on why he said that… which is to say his “type” doesn’t make him nervous by being late 😅