You lied saying that you do trust him but whatever he said about the other noona didn’t make sense to you. You just didn’t want to talk to him. Someone he looks cute, bright and nice on the outside but a player in the inside, you didn’t need this kind of a guy.

“Oh thanks god you still trust me lets hang out tomorrow?” he said.
“I can’t I have lots of studying to do.”
“ Won’t you be free in the couple coming days?”
“No~”
“I understand”
“Okay see you then bye” you left with waiting for him to reply.

Maybe being with someone who is younger than you isn’t a good idea, and now you get to spend your college life with no friend only being focused in your studies it’s not what you wanted but this is how life ends with you.

After you finish studies and graduate you go back to America with no life experience.