The type of story already done many time and became formula. But this is smart to to use "it a lie" and make it little fresh and less cliche. Not that it is the first one use it though.
And,
EWW.... that gross ! *Instant follow*
Lol so she sucked his saliva in the middle of the street? So the guy is just trying to make the kisses ridiculous to “pressure” her into telling the truth lol. What is this? Kaguya-sama?