MC's a bit pushy, i mean it's a comedy manga, his "go with the flow" attitude must be ramped up for comedic effect, but it's not like he's pushy to the point that natsuki feels inconvenienced/uncomfortable. Well yeah, he asked dumb and shitty question but it's for comedic purpose. I mean MC loves natsuki and from what i can gather natsuki is his first love so his feeling is naturally, still strong, it would take more than a rejection to get rid of his love for natsuki and since natsuki is okay with it, i don't really see any problem with the MC still loving natsuki even after getting rejected.