That's the point... cause the seme is scared of to reveal that it was him, I just felt that he would have to want to hide it more (sure, he had already hidden it more for like about 2 years) but since they just met now it would have been better to know the hyung and his junior more about each other, spend more time while the uke slowly realized that it was the seme or something....Also seme seemed like the sweet type of guy and all romantic to hold a crush and all..So it's wouldn't have fit his personality to write "I had great time" but more like "I hope u had great time too." Something sweet type of. Also it's nothing related to seme or uke I just felt like the author could have done more justice to the way she folded the story. It's a great story. But it's just my opinion as a fellow reader. I have no right to order the author, she's or he's the queen or king. I am just an adviser.
I think it would have been more great if the story was longer and little bit by bit the seme leaves hints and the uke's delima and all the drama and another seme, to whom the uke also questions if it was him ?
Also the uke was too kind not feeling insulted when some dude came to his room , didn't let him see any part of him but saw every part of his body and f%$#@ed him and left the message "I had good time". Too much self centered, eh ? At least he could have left "hope u had good time too." Or something...which would actually match up with the seme's personality too. But I am just saying that's my opinion. I mean some people like simple stuff without much drama.