you probably didn't realize/catch onto this but this is a valentine's day special of them in the future where they are older years later... so this definitely wasn't their first 'interaction'. it'll go back to the main storyline after, where they are in middle school again...
to continue off, since the author has been doing a great job developing their relationship thus far with jian yi confessing, them sleeping together in the same bed, going on a date the next day, and xi becoming more affectionate even more than he usually is.. I think the author will surely make it a sweet special kiss soon. .. I don't think the author would play off such a serious important moment as something 'funny'. but yeah rest assured this is just a light fluffy valentines special of all the horny boys in the future. ^-^
How you know about this?
Because they're already together in this special chapter. Mo and Than Zheng xi have different hairstyles.
*Zhan damn autocorrect XD
Mo has the same hairstyle Old Xian draws him with when he's older. Also it's just obvious it's when they are older because middle school Mo would never be this chill in a room alone with He Tian in robes. He couldn't even be close in the same elevator as him without freaking out so he definitely wouldn't be in bed with him. :V
I may be the only one who thinks this way but I've been reading this for like 50 years and if The Main's first gay interaction is a prostate massage I will throw a table.
I mean, after all these fucking 230 chapters, we're all craving some action already, but exactly because it's been so long it is that I want their first to be something.... more simple. Like a reciprocate kiss under the moonlight I don't know man I just want the waiting to be worth it, and this is doing a great job developing their relationship, don't mess it up with some fingering that started funny. Leave that for later. Like. 30 chapters from now.